Synonyms for in close cooperation

Synonyms for in

with (per, of, to >>)
through
within

See all synonyms for in

Synonyms for close

near
shut (close in, close down, shut down >>)
nearby
close up
tight (crowded, dense, stuffy >>)
end
intimate
nigh
narrow
complete
stop
approach
lock (covering, shutting, shutdown >>)
secretive
serried

See all synonyms for close

Synonyms for cooperation

collaboration (partnership, coordination, liaison >>)
relationship

See all synonyms for cooperation