Other spellings change

Word parts change

tranquil + -ize

Pronunciation change

Verb change

Plain form
tranquilize

Third-person singular
tranquilizes

Past tense
tranquilized

Past participle
tranquilized

Present participle
tranquilizing

  1. (transitive) If you tranquilize an animal, you calm it or put it to sleep using a tranquilizer dart.