bunch up

Verb bunch up has 2 senses

• bunch up(v = verb.motion) bunch, bunch together - form into a bunch; "The frightened children bunched together in the corner of the classroom"
is one way to clump, cluster, constellate, flock
Sample sentence:
Somebody ----s PP

• bunch up(v = verb.contact) bunch, bundle, clump, cluster - gather or cause to gather into a cluster; "She bunched her fingers into a fist"
is one way to form
Sample sentences:
Something ----s
Somebody ----s something
Somebody ----s something PP