Behoove
Webster's 1828 Dictionary
Behoove
BEHOOVE, verb transitive behoof'. To be necessary for; to be fit for; to be meet for, with respect to necessity, duty, or convenience.
And thus it behooved Christ to suffer. Luke 24:1.
It may perhaps be used intransitively; as, let him behave as it behooveth; but I believe such use is rare.
Webster's 1828 Dictionary
Behooveful
BEHOOVEFUL, adjective behoov'ful. Needful; useful; profitable; advantageous.
Webster's 1828 Dictionary
Behoovefully
BEHOOVEFULLY, adverb behoov'fully. Usefully, profitably.