say it: kuhm-PLAYN
complain is a verb meaning "express complaints, discontent, displeasure, or unhappiness". It carries 2 recorded senses.
make a formal accusation; bring a formal charge
“The plaintiff's lawyer complained that he defendant had physically abused his client”
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 complain 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.