🔍 牛津詞典
🔍 朗文詞典
🔍 劍橋詞典
🔍 柯林斯詞典
🔍 麥美倫詞典
🔍 韋氏詞典 🎯
檢索以下詞典：
(Mr. Ng 不推薦使用 Google 翻譯！)
最近搜尋：
- fan mail 30
- freshen 45
- continue 288
- chicken pox 31
- certificate 294
- major 268
- disembowelled 17
- biddies 16
- Dictionaries 10
- dispelling 16
- clock 340
- measure 391
- misdirect 107
- fancy dress 37
- chases 30
- besetting 33
- dependencies 19
- undo 343
- competitive 408
- running 21
- bargain for 36
- grip 280
- receiver 342
- frontier 372
- museum 314
- bumpiest 20
- illustrative 41
- go-round 28
- establish 377
- tempest 121
- blew 24
- absolute zero 37
- extrusile 22
- auditable 20
- range 297
- pullover 32
- drops 20
- cash and carry 41
- ledge 142
- request 354
- dis- 40
- gemmed 17
- attempt 394
- corporate 127
- exhortative 23
- status 319
- obey 329
- superlative 34
- reduce 366
- accompli 21
- forget-me-not 37
- bone-dry 29
- glutamate 32
- offer 312
- Filter 32
- patch 315
- arabicization 21
- brazil 31
- deliberate 283
- cash register 33
- reproduce 461
- tailor 386
- consist in 14
- compliments 21
- tableware 23
- contretemps 37
- bitcoin 24
- perspective 460
- arrival 356
- eye-opener 29
- Glad 23
- caregiving 17
- fornicate 49
- deft 60
- rusty 328
- eastwardly 22
- Optimism 22
- puzzle over 24
- Metro 107
- Discretionary 35
- forever 289
- ding-a-ling 21
- Gases 35
- Evaluate 53
- faintest 19
- anyhow 266
- Support 39
- Irrefutably 8
- frisking 17
- editor 312
- Recapitulate 71
- preface 275
- Trend 155
- robe 326
- behaved 20
- errancies 14
- cladded 17
- fashionable 303
- airtight 53
- comeliest 18
- make ends meet 16
- elastic 352
- Compensate 122
- dinnerless 16
- bottle out 37
- fade 379
- find 175
- cybercrime 26
- char 329
- februaries 17
- crochetings 17
- honourable 273
- heritability 35
- br 43
- hut 271
- GEAR 33
- warnings 17
- bedside 43
- calisthenics 42
- inaccuracy 140
- motion 317
- gasometer 28
- Attend to 19
- judgment call 36
- delegate 344
- auntly 16
- vital 475
- despair 289
- staff 324
- clansman 54
- annum 21
- stubborn 112
- formal 352
- Bonfire Night 26
- consume 316
- nazi 34
- died 28
- bird-feeder 28
- clothing 319
- Clown 32
- goes 25
- urbanities 15
- apartment 320
- cherublike 17
- discover 298
- search 318
- bed-sitter 19
- coding 24
- cardinalate 21
- have a cow 48
- hemorrhage 44
- dishonour 215
- gobies 21
- foreskin 41
- dunned 17
- Politicians 13
- shabbier 17
- by hand 48
- Box office 24
- closable 17
- bald 98
- affluent 270
- excerpter 18
- activity 332
- flintier 16
- embark 185
- STRINGY 21
- Seamlessly 8
- upscale 9
- funplex 26
- remote 1333
- fibbed 14
- costliest 20
- electron 280
- downshifting 16
- differ 281
- instinctive 64
- gonorrhea 66
- jaw-dropping 21
- assimilation 69
- flexed 21
- air-to-air 30
- further 262
- Urged 26
- arts 21
- imperil 94
- rejoice 307
- shadow 390
- Predator 41
- Ghana 31
- eventualities 22
- jam 292
- bigamous 35
- condonation 23
- crowed 32
- computerlike 14
- gutless 259
- estate 319
- free agent 37
- vary 301
- amah 22
- repeatedly 248
- Early 155
- pretty 303
- dunelike 19
- guzzling 15
- antipodes 24
- Boot camp 20
- unsubstantiated 158
- admire 311
- effigies 18
- grapes 21
- bathing suit 51
- privilege 340
- burrow 54
- version 336
- gutta-percha 58
- routine 336
- Declaim 93
- chunks 30
- cfo 33
- croatia 23
- complicate 334
- recite 293
- Assn. 21
- knickers 72
- antonymy 16
- arrestor 21
- cockies 19
- crack 346
- gained 15
- cert 48
- Thing 80
- lieutenant 260
- choppiest 14
- Loch 17
- Discuss 112
- endless 317
- definite 254
- Unity 43
- bunchier 18
- Sound 111
- workshop 364
- besought 19
- F 31
- cahoot 36
- gee-gee 27
- gametically 20
- adoptively 13
- armchair 52
- psychological 302
- Scourge 107
- brokerages 23
- arrows 16
- confrontal 18
- Petrol 109
- youth 305
- contoured 30
- poke 313
- saskatoon 34
- creole 23
- folksier 27
- Soaring 83
- trade in 57
- claimant 51
- gasoline 302
- Cuba 26
- checkbox 26
- cockcrow 22
- Intimidation 82
- dinned 18
- open-mouthed 76
- super 279
- filmable 18
- beer gut 28
- bromidic 19
- experiment 314
- luscious 52
- among 149
- chronologist 25
- Full 150
- carrot 306
- base 346
- Mirror 123
- threaten 552
- ill-fated 15
- proper 328
- boss 317
- Running 135
- Hammer 25
- billion 325
- hammed 13
- at the risk of 44
- savor 101
- ftp 27
- cohesionless 19
- diacritic 27
- forfeits 22
- radiate 295
- flintlike 16
- Mendacious 21
- crow's nest 28
- breed 334
- cline 30
- maigre 26
- cowcatcher 8
- daffier 18
- dormitory 267
- cession 42
- funkiest 21
- supply-side 65
- Money 77
- consolatory 17
- get in with (someone) 25
- ensure 304
- defier 24
- all the same 57
- bighearted 33
- centenaries 18
- mode 298
- Order 86
- plug 361
- dossier 161
- symbiosis 56
- For instance 29
- premier 373
- change 228
- dye 314
- battlement 76
- fall in 33
- dirt-poor 26
- determination 327
- bioweapon 38
- apple-pie 24
- publicity 133
- battleground 39
- tolerant 98
- tolerance 354
- dismayed 61
- taboo 136
- beast 307
- band-aid 44
- box in 35
- graduating 26
- staircase 312
- Cannabis 30
- royal 284
- romance 52
- Predicament 21
- gov 33
- Bare 64
- butterfly 323
- faustian 32
- Pry 38
- fiduciaries 15
- corpse 71
- Pedal 54
- shed 346
- Brit-pop 27
- unified 53
- deliberately 408
- airtime 50
- dwarfish 33
- dives 27
- spit 259
- ombudsman 129
- castanet 33
- while 138
- bibliographies 17
- SWELL 50
- enclose 335
- caddying 23
- settlement 462
- balky 50
- stature 65
- Occupancy 124
- Airport 106
- sin 293
- locust 294
- flow 339
- dry-cleaning 16
- get off on 25
- geographic 136
- existence 303
- boatlike 18
- arcades 82
- nectarous 26
- deviltry 19
- Forage 84
- DRASTIC 28
- floorboard 50
- gif 31
- oat 34
- antiheroic 17
- consciousness 344
- cross-train 25
- cypriot 22
- bikeway 38
- strictly 258
- booby-trap 18
- declaim 75
- bulgaria 31
- forgeries 14
- contains 22
- Accumulate 137
- gate 147
- square away 28
- preference 336
- Bondage 32
- clubby 60
- loss 299
- region 378
- value 577
- arboreally 18
- wreath 342
- daisies 15
- Quarantine 55
- wire 368
- but 156
- preposition 278
- haiti 41
- client state 35
- Disguise 6
- bribee 21
- gambian 21
- counterpart 116
- identity 322
- conservation area 26
- consummate 48
- aquaplane 20
- human geography 16
- chemistry 297
- grimmest 16
- congrats 21
- Shock 104
- bahamas 37
- one way or another 15
- grieve 312
- Chemistry 79
- chestily 21
- flimsiest 22
- pleat 26
- reader 325
- Livable 110
- Simply put 12
- allotting 19
- dustup 30
- geriatrics 21
- forwardly 21
- à la 35
- training 295
- glassie 18
- clear-sighted 31
- steer 281
- flatcar 129
- fanaticize 24
- Compelled 24
- boughed 22
- bum bag 35
- crash 335
- advertising agency 19
- gasses 19
- fs 36
- Consequential 5
- sauce 357
- Threatening 64
- barque 86
- dolmen 46
- annapolis 26
- armagnac 24
- rescue 286
- owe 389
- hakim 29
- baptism of fire 29
- inconsistency 6
- Protests 25
- Ravage 5
- Dismantle 5
- Sketch 6
- secret 279
- common land 29
- cling 54
- encase 45
- step on (someone's) toes 31
- supply line 29
- dietetics 38
- involving 5
- double dip 54
- cahoots 21
- soap 298
- extrapolate 49
- day-tripper 21
- Tile 56
- drip 284
- fatiguingly 21
- burnable 27
- drapability 20
- furniture 299
- broad bean 41
- Blvd. 22
optional
1 ENTRIES FOUND:
optional
adjective
op·tion·al ˈäp-sh(ə-)nəl 
: involving an option : not compulsory
optionally adverb
Synonyms
Example Sentences
Jackets are required at the restaurant, but ties are optional. Many optional features are available on this car. Registration is optional, not mandatory.
Recent Examples on the Web New York City’s subway and bus system decided to make mask wearing optional, and free masks will still be available at subway station booths and on commuter railroad trains. 
Los Angeles Times, 14 Sep. 2022 Most public schools plan to keep masks optional this fall. Jacqueline Howard, CNN, 6 Sep. 2022 Serving in a silver julep cup is fun, but optional. Anna Luisa Rodriguez, Washington Post, 17 Aug. 2022 Power folding second- and third-row seat are optional or standard, depending on trim. Rachel Rothman, Good Housekeeping, 17 Aug. 2022 In Towson, Apple continued the practice, but changed the meetings from mandatory to optional, which would technically comply with the law. Wired, 29 July 2022 The top speed, with the optional 19- or 20-inch wheels, is 165 mph. Michael Harley, Robb Report, 6 July 2022 This week, New York City finally made masks optional for children ages two to four in preschools or daycare facilities. Michael Brendan Dougherty, National Review, 15 June 2022 Many other universities and colleges across Illinois began the semester with face coverings being optional in most indoor areas. Angie Leventis Lourgos, Chicago Tribune, 1 Sep. 2022 See More
Los Angeles Times, 14 Sep. 2022 Most public schools plan to keep masks optional this fall. Jacqueline Howard, CNN, 6 Sep. 2022 Serving in a silver julep cup is fun, but optional. Anna Luisa Rodriguez, Washington Post, 17 Aug. 2022 Power folding second- and third-row seat are optional or standard, depending on trim. Rachel Rothman, Good Housekeeping, 17 Aug. 2022 In Towson, Apple continued the practice, but changed the meetings from mandatory to optional, which would technically comply with the law. Wired, 29 July 2022 The top speed, with the optional 19- or 20-inch wheels, is 165 mph. Michael Harley, Robb Report, 6 July 2022 This week, New York City finally made masks optional for children ages two to four in preschools or daycare facilities. Michael Brendan Dougherty, National Review, 15 June 2022 Many other universities and colleges across Illinois began the semester with face coverings being optional in most indoor areas. Angie Leventis Lourgos, Chicago Tribune, 1 Sep. 2022 See More Word History
First Known Use
1765, in the meaning defined above
Time Traveler
The first known use of optional was in 1765 adjective
👨🏻🏫 Mr. Ng 韋氏詞典 📚 – mw.mister5️⃣.net
切換為繁體中文