Synonyms for Knee-deep:

adv.

all (adverb)
knee-high.

n.

pressed, embroiled, in deep trouble, up against something, stuck, worse off, oppressed, out of your depth, Beleaguered, deadlocked. come down, bottommost, fathom, bottomless, fathomless, depth, deep, deeply. standing, spreadeagled, on tiptoe(s), on your feet, upright, erect. knee-deep (noun)
knee-high, shallow, ankle-deep.

Other synonyms:

bottommost, deeply. fathom, fathomless, bottomless. upright. erect. standing. depth. come down. Other relevant words:
deeply, stuck, standing, deep, depth, erect, fathom, oppressed, Beleaguered, bottomless, spreadeagled, upright, bottommost, embroiled, deadlocked, pressed, fathomless.