Like prefixes and suffixes, infixes are part of the general class of affixes ("sounds or letters attached to or inserted within a word to produce a derivative word or an inflectional form"). Infixes are relatively rare in English, but you can find them in the plural forms of some words. For example, cupful, spoonful, and passerby can be pluralized as cupsful, spoonsful, and passersby, using "s" as an infix. Another example is the insertion of an (often offensive) intensifier into a word, as in "fan-freakin'-tastic." Such whole-word insertions are sometimes called infixes, though this phenomenon is more traditionally known as tmesis.
implant implies teaching that makes for permanence of what is taught.
implanted a love of reading in her students
inculcate implies persistent or repeated efforts to impress on the mind.
tried to inculcate in him high moral standards
instill stresses gradual, gentle imparting of knowledge over a long period of time.
instill traditional values in your children
inseminate applies to a sowing of ideas in many minds so that they spread through a class or nation.
inseminated an unquestioning faith in technology
infix stresses firmly inculcating a habit of thought.
infixed a chronic cynicism
Example Sentences
Verb a puzzling detail that had been infixed in the detective's mind for over a decade a football coach celebrated for infixing in his players an all-consuming will to win
Recent Examples on the Web
Noun
The path of the infix is uncertain, but linguist Joshua Viau has found similar examples in 1960s radio broadcasts and early 1970s drug slang. Mark Peters, BostonGlobe.com, 11 Mar. 2018
Word History
Etymology
Verb
Latin infixus, past participle of infigere, from in- + figere to fasten — more at fix