accumulate
agglomerate
aggregate
aggroup
amass
assemble
backlog
batch
bring together
bulk
bunch
bunch together
bunch up
clump
cluster
collect
colligate
collocate
combine
compare
compile
conglomerate
corral
dig up
draw together
dredge up
drive together
garner
garner up
gather
gather in
gather into barns
gather together
get in
get together
group
heap up
hide
hive
hoard
hoard up
hold
join
juxtapose
keep
lay up
lump together
make up
mass
increase
accrete
drift
cumulated
cumulates
cumulating