intoxicant Get Printable Handwriting (in-tox-i-cant) 4 syllables Learn It! Spelling Test Definition noun. 1 a liquor or brew containing alcohol as the active agent; 2 a drug that can produce a state of intoxication Example Sentence Just because an intoxicant is legal does not mean it is good for you. Synonyms alcoholic beverage; booze; liquor; narcotic Antonyms sober Share with your friends: