say it: SIK-uhn
sicken is a verb meaning "cause aversion in; offend the moral sense of". It carries 4 recorded senses.
upset and make nauseated
“The smell of the food turned the pregnant woman's stomach”
“The mold on the food sickened the diners”
Forms marked · are formed by the regular rule rather than recorded in the source data. English keeps a few hundred irregulars and the rest follow the pattern, so the rule is right far more often than not — but it is a rule, and the mark says so.
Definitions, synonyms and semantic relations for sicken come from Princeton University’s WordNet. The pronunciation comes from the CMU Pronouncing Dictionary. Commonness is measured against a corpus of everyday English. Full sources and licences.