insinuate
Meaning: to suggest indirectly or subtly
Usage: I wish Luke and Spencer would stop insinuating that my perfect report card is the result of anything other than my superior intelligence and good work habits.
intimation
Meaning: an indirect suggestion
Usage: Mr. Brinford’s intimation that he would soon pass away occurred when he began to discuss how to distribute his belongings among his children.
innuendo
Meaning: an insinuation
Usage: During the debate, the politician made several innuendos about his opponent’s honesty without stating any accusation directly.