40 synonyms for suggestion such as ghost, advice, hint, breath, and dash. Suggestion is a noun, and its antonyms are command and order.
Advice, clue, counsel, exhortation, hint, idea, motion, piece of advice, proposal, proposition, recommendation, submission, tip, and tip-off.
Hint, implication, imputation, innuendo, insinuation, and intimation.
Breath, connotation, dash, ghost, glimmer, hint, impression, modicum, nuance, semblance, shadow, soupçon, suspicion, tinge, touch, trace, undertone, whiff, and whisper.