Synonyms of deceptively

2 Syllables
slyly, shrewdly, keenly, smartly, ably, coolly, deftly
3 Syllables
artfully, untruly, cunningly, trickily, foxily, cleverly, knowingly, adroitly, skillfully
4 Syllables
carefully, sagaciously, facilely, untruthfully, mendaciously, deceivingly, guilefully, judiciously
5 Syllables
perspicaciously, intelligently
6 Syllables
deliberately