slacks Get Printable Handwriting (slacks) 1 syllables Learn It! Spelling Test Definition noun. pants for casual wearverb. slow; idle; sluggish barely moving; said of a current; as of air or water characterized by little work; trade; or business; not busy or active Example Sentence Please wear your nicest slacks. Synonyms fiddle; shirk; shrink from; goldbrick Antonyms quick Share with your friends: