expressive

The adjective expressive suggests conveying, or being capable of conveying, a thought, intention, emotion, etc., in an effective or vivid manner: an expressive gesture. Meaningful and significant imply an underlying and unexpressed thought whose existence is plainly shown although its precise nature is left to conjecture. Meaningful implies a secret and intimate understanding between the persons involved: Meaningful looks passed between them. Significant suggests conveying important or hidden meaning: On hearing this statement, he gave the officers a significant glance. Suggestive implies an indirect or covert conveying of a meaning, sometimes mentally stimulating, sometimes verging on impropriety or indecency: a suggestive story or remark.