booster

noun/ˈbuːstər/

Frequency rank: #7,104 of 20,003 in the WORDED list (wordfreq data)

Meaning

an additional dose of a vaccine given to strengthen or extend immunity, or something that increases power or support.

Illustration for the English word “booster”

Example sentence

The doctor recommended that everyone get a flu booster shot to stay protected this season.

Synonyms & related words

More words in ranks 7,101–7,200