1
archaic : somewhat ill : sickly
2
: somewhat nauseated : queasy
3
: somewhat sickening
a sickish odor
sickishly adverb
sickishness noun
Cite this Entry
“Sickish.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.grautoblog.com/dictionary/sickish. Accessed 25 Apr. 2026.
Copy CitationKids Definition
sickish
adjective
sick·ish ˈsik-ish 
1
: somewhat nauseated
2
: somewhat sickening
a sickish odor
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