1) Admiring 2) Adulatory 3) Approving 4) Attractive 5) Becoming 6) Civil 7) Effusive 8) Excessive 9) Fawning 10) Fetching 11) Gracious 12) Immoderate 13) Ingratiating 14) Ingratiatory 15) Kind 16) Overgenerous 17) Praising 18) Submissive 19) Sycophantic 20) Toadying 1) Adulatory 2) Appreciative 3) Completely 4) Complimentary 5) Gnathonical 6) Ingratiating 7) Rewarding 
• (p. pr. & vb. n.) of Flatter • (a.) That flatters (in the various senses of the verb); as, a flattering speech.
Flat'ter·ing adjective That flatters (in the various senses of the verb); as, a flattering speech. « Lay not that flattering unction to your soul.» Shak. « A flattering painter, who made it his care, To draw men as they ought be, not as they are.»...
[adj] - tending to reveal or represent favorably
adjective showing or representing to advantage; `a flattering color`
favorecedor