WordNet sense 1 (of a person who has held and relinquished a position or office):

past, retiring

WordNet sense 2 (leaving a place or a position):

outgoing

WordNet sense 3 (just preceding something else in time or order):

previous

WordNet sense 4 (preceding in time, order, or significance):

precedent, precedent

WordNet sense 5 (especially of writing or speech; going before):

foregoing

WordNet sense 6 (earlier in time):

prior

WordNet sense 7 (preceding in time or order):

antecedent