にこにこ (translations)→ brightly indulgently sweetly
にこやかに (translations)→ affably cordially friendly gaily kindly lovingly nicely personable pleasantly richly smiling
愛想のいい (translations)→ amicable cherry coy happy hopefully obsequious
愛想よく (translations)→ aggreeable charmingly cheerfully cheerily genially gregariously hearty hospitably obligingly politely sociably suavely winningly