Found 3 items, similar to furtively.
English → Indonesian (quick) Definition: furtive diam-diam
English → English (WordNet) Definition: furtively furtively adv : in a furtive manner; “the soldiers were furtively crawling through the night” [syn: on the sly]
English → English (gcide) Definition: Furtively Furtively \Fur"tive*ly\, adv. Stealthily by theft. --Lover. [1913 Webster]