Crossword clues for the word: BOOSTERSHOT The word BOOSTERSHOT has appeared as an answer to at least 8 crossword clues on different crossword puzzles. Crossword clues for BOOSTERSHOT Showing 1 to 8 of 8 results Clue(s) Doctor's dig? Follow-up vaccination Immunity enhancer Immunological follow-up Injection protection Insult from a team supporter? Promotional image? Shoplifter's snort of whiskey?