LICITLY
legitimately, lawfully, licitly
(adverb) in a manner acceptable to common custom; “you cannot do this legitimately!”
Source: WordNet® 3.1
Etymology
Adverb
licitly (comparative more licitly, superlative most licitly)
In a licit manner, legally, in a manner compatible with law.
Source: Wiktionary
LICIT
Lic"it, a. Etym: [L.licitus permitted, lawful, from licere: cf. F.
licite. See License.]
Definition: Lawful. "Licit establishments." Carlyle.
– Lic"it*ly, adv.
– Lic"it*ness, n.
Source: Webster’s Unabridged Dictionary 1913 Edition