to gather, to collect, to bring together, to assemble, to get together, to round up, to marshal, to compile, to put together, to pull together, to draw together, to pool
to satisfy, to meet, to possess (e.g. conditions, requirements, criteria, qualifications, characteristics)
to join, unite
to reunite, reconvene
to muster, to summon (e.g. the courage, determination, will, strength, energy)
to raise, to muster (e.g. money, an army)
to huddle
(reflexive) to meet, to meet up, to get together, to assemble, to convene, to rendezvous
(reflexive) to join
(reflexive) to reconvene, to reunite, to rejoin
