over one's head
weigh down
overinvolved
overadminister
overpowering
snow under
broken
overmaster
forset
spleenful
bite off more than one can chew
break the back of
overridability
have eyes bigger than one's stomach
overwhelm
overdeal
prostrate
overwield
overhandle
knock-me-down
overpermed
burst at the seams
overpoweringness
gain
overplay
too much pudding will choke a dog
overdo
oversway
tanto
overpowerable
nimiety
overburn
overtakable
oversupination
lay on
overcollect
sweep up
impregnable
overdeliverer
devastate
overpoweringly
kill
bum-rush
overbrim
busted
overflowingly
overrestrain
run over
overcoddle
a bit much
overboard
overshoot
abound
brim
gutful
overwell
overshift
overeffusiveness
overrespond
too much water drowned the miller
overreacher
overdramatically
overvaluing
overripely
overissue
overinvolvement
overvigorously
hyperrepressed
overallocate
overpermissive
overmuch
overdirect
umbilical cord
overaffect
overmany
overdraught
overcarry
too many balls in the air
overrigorously
excessively
over the odds
use a sledgehammer to crack a nut
overbreathed
overboost
overgoing
heavy-handed
overmanipulate
overwrite
overcontrol
overspend
upwards of
flood out
overcharitably
overcarefully
overplay one's hand
deluge