an indirect or covert suggestion or hint, esp. of a derogatory nature

She made nasty insinuations about her rivals.

covert or artful suggestion or hinting, as of something implied

His methods of insinuation are most ingenious.

subtle or artful instillment into the mind.

the art or power of stealing into the affections and pleasing; ingratiation

He made his way by flattery and insinuation.

Archaic . a slow winding, worming, or stealing in.

Obsolete . an ingratiating act or speech.

noun

veiled remark , innuendo , hint , suggestion