WordNet sense 1 (based on known statements or events or conditions):

logical

WordNet sense 2 (make legal):

decriminalize, legalize, legitimatize, legitimize, decriminalise, legalise, legitimatise, legitimise

WordNet sense 3 (brought about or set up or accepted; especially long established):

constituted, established

WordNet sense 4 (having a legally established claim):

lawful, rightful, true

WordNet sense 5 (authorized, sanctioned by, or in accordance with law):

licit

WordNet sense 6 (established by or founded upon law or official or accepted rules):

legal