Synonyms for Get together:

n.

come by, accept, obtain, derive, get, bring, congregate, find. settle, round up, stockpile, buy up, cull, scrape together, agree on. congress, reorganize, body, convention, convocation, conclave, assemblage, structure, prioritize, crowd, congregation, conference, manage, gathering, coordinate, systematize, company, assembly, muster, group, codify, marshal, troop, operate, restructure. chat up, flirt, have your eye on someone, ask out, pair off, chase, make a pass at someone, sweep someone off their feet, run after, pick up. get back, draw, turn over, make, realize, generate, gross, net. dinner party, fringe, evening, blind date, competition, coffee klatch, black tie. convene, flock, meet with, flash mob. be/feel/look at home, wind down, relax, cool down, loosen up, get yourself together, chill, compose yourself, calm down. discipline, self-control, temperance, constraint, self-discipline, dignity, willpower, self-censorship, stiff upper lip, self-restraint. work out, sign off on, enter into, reach, strike, seal a victory/deal/agreement, come to terms (with someone). convention (noun)
assemblage, assembly, congress, convocation.
get-together (noun)
congregation, meeting.
get together (noun)
join forces, join, gather, cooperate, fall in, meeting, collaborate, meet, assemble.
group (noun)
meeting.

v.

collaborate (verb)
cooperate, join forces.
compile (verb)
cull, gather, group, marshal.
convene (verb)
round up.
get together (verb)
meet, convene, assemble, muster, congregate, join.
social (verb)
meet, assemble, gather.

Other synonyms:

stockpile, obtain, net, cull, derive, sign off on, come by, scrape together, bring. congregation, convene, troop, conclave, convocation, congregate, round up, meet with, get, find. congress, group, generate, accept, assemblage, flash mob, muster. assembly, get back, realize, enter into. company, conference, convention, flock. turn over, crowd, gross. work out. draw. make, pick up. body. strike. assembly
gathering.
bring together
group.
Other relevant words:
stockpile, congress, congregation, assembly, muster, conclave, congregate, crowd, marshal, convocation, group, troop, gathering, flock, get, convention, scrape together, cull, agree on, convene.