say it: im-PROOV
improve is a verb meaning "to make better". It is pronounced /ˌɪmˈpɹuv/ — im-PROOV. It carries 2 recorded senses.
to make better
“The editor improved the manuscript with his changes”
get better
“The weather improved toward evening”
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 improve 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.