ef-ih-KAY-shus
(adjective) Effective in producing the desired result.
The vaccine proved highly efficacious in preventing disease.
Fun Fact
While “effective” and “efficacious” are similar, the latter is usually used in formal, academic, or scientific contexts. For instance, in pharmaceutical trials, a drug must be “efficacious” before it can be deemed “effective” for general use. It’s a favorite in public health and policy.
WOHNT (rhymes with “don’t”)
(noun/adjective) A habitual or customary practice; accustomed to behaving in a particular way.
As was her wont, she arrived twenty minutes early and rearranged the furniture before anyone else showed up.
From Old English gewunod, past participle of gewunian (“to be accustomed”), related to wunian (“to dwell, to remain”). The word shares a root with “won” (archaic past tense of “to dwell”) and is distantly related to the modern German wohnen (“to live, to dwell”). A wont is something you dwell in — a habit so settled it becomes a kind of home.
Fun Fact
“Wont” is one of the most consistently misused words in English — it’s regularly confused with “won’t” (the contraction of “will not”) simply because they sound identical in many accents. Despite this, “wont” has survived in literary and formal writing for over a thousand years, appearing in Shakespeare, Milton, and Austen. It’s also one of the few words in English that functions as a noun, adjective, and past participle without changing its form at all — a linguistic Swiss Army knife that most people have never noticed.
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