Meaning
To make thicker (in the sense of wider).
Etymology
Origin: Middle English
From Middle English thickenen, thikkenen, perhaps from Old Norse þykkna (“to thicken”); equivalent to thick + -en. Cognate with Swedish tjockna (“to thicken”), Icelandic þykkna (“to thicken”).
Synonyms & Antonyms
NYT Puzzle Appearances
Accepted in 1 recorded puzzle, including a pangram: