Nowadays, seethed is the past tense and past participle form of the verb seethe (which originally meant "to boil or stew"). Originally, however, seethe could also be conjugated in the past tense as sod and in the past participle as sodden. By the 14th century, sodden had become an independent adjective synonymous with boiled. And, by the 16th century, it had taken on the figurative sense used to describe someone who appears dull, expressionless, or stupid, particularly as a result of heavy drinking. Today, sodden is commonly used as a synonym of soaked or saturated. Seethe followed a different figurative path: while one who is sodden may appear dull, torpid, or sluggish, one who is seething is highly agitated, like a pot of boiling water.