Grade 5 carefully Get Printable Handwriting (care-ful-ly) 3 syllables Rhymes Learn It! Spelling Test Definition adverb. taking care in one's actions; cautious; done with care and effort. Example Sentence Please walk carefully so you do not knock anything over. Synonyms attentive; caution; cautious; on guard; safe Antonyms careless; thoughtless; sloppy Rhymes Three Syllable Rhymes (1) carefully Share with your friends: