thicken
2 synonyms and 1 antonym for thicken, grouped by meaning and by how common each one is.
Verb — To make something wider or bulkier.
Synonyms
Less common
Still standard English, but they carry more weight.
Rare, literary or technical
Precise, but they will stand out — check the sense before using one.
inspissate
Antonyms
Etymology
From Middle English thickenen, thikkenen, perhaps from Old Norse þykkna (“to thicken”); equivalent to thick + -en. It is cognate with Swedish tjockna (“to thicken”) and Icelandic þykkna (“to thicken”).
Full origin of thicken →