The following are two groups of words that are not infrequently used, one starting with t and the other starting with f or fl. I constantly get confused between tout and taunt, flaunt and flout, flounder and founder and flounce. The most surprising of all is founder which is supposed to mean a person who starts an organization. (This is not to be confused with finder, which means a person who finds someone or something.) However when founder is a verb, it means sink, fail, or break down. Isn’t that surprising–the noun and the verb having the opposite meaning? As a non-native speaker, one has to stay strong in the face of ceaseless efforts of English words trying to push one over the edge of sanity.
tout: attempt to sell (something), typically by pestering people in an aggressive or bold manner.
taunt: a remark made in order to anger, wound, or provoke someone.
taut: stretched or pulled tight; not slack; not relaxed.
flout: openly disregard (a rule, law or convention).
flaunt: display (something) ostentatiously, especially in order to provoke envy or admiration or to show defiance.
flounder: struggle or stagger helplessly or clumsily in water or mud.
founder: (of a ship) fill with water and sink; (of a plan or undertaking) fail or break down
flounce: go or move in an exaggeratedly impatient or angry manner.