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say it: BOO-stur
booster is a noun meaning "a person who backs a politician or a team etc.". It carries 6 recorded senses.
a person who backs a politician or a team etc.
“all their supporters came out for the game”
“they are friends of the library”
someone who is an active supporter and advocate
a thief who steals goods that are in a store
an amplifier for restoring the strength of a transmitted signal
the first stage of a multistage rocket
an additional dose that makes sure the first dose was effective
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 booster 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.