Synonyms for Soak up:

n.

go through, get down to, deplete, eat into, use up, finish, exhaust, run out. like, drink in, take/find pleasure in (doing) something, enjoy, have your fun, love, delight in, go in for, revel in. plop, submerge, immersion. soak up (noun)
absorb, immerse, engulf, sop up, plunge, imbibe, steep, draw, engross, suck up.

v.

absorb (verb)
imbibe, sop up, drink in.
dry (verb)
deplete, exhaust.
preoccupy (verb)
engross, immerse.

Other synonyms:

submerge. immersion, plop. Other relevant words:
drink in.