say it: SIS-ee
sissy is a noun and adjective meaning "a timid man or boy considered childish or unassertive". It carries 2 recorded senses.
a timid man or boy considered childish or unassertive
having unsuitable feminine qualities
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 sissy 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.