puss out
pussy out
wuss out
chickenshit
yellow streak
cowardliness
show the white feather
cowhearted
poor-spirited
dough-faced
pigeon-livered
chicken-livered
liver-hearted
craven
cowardry
recreant
poltroon
cowardize
dastardliness
wimp out
cravenness
dastardly
duck
forbear
bottle it
refrain
dastard
gutless
uncourageously
pussylike
punk
retromingent
sissy
milky
chicken
fraidy
cowardy
coward
yellow-bellied
backbonelessness
lose one's nerve
hen-hearted
kiasi
bacaw
funky
gutlessly
throw something in someone's face
lily-livered
rationalization
yellowbelly
quakebuttock
pussyhole
scaredy pant
yellow back
chicken liver
lizard
Brittany
scaredy pants
puss-puss
fraidy cat
cowardlily
chicken out
talk sense
pusillanimous
fraidy-cat
discretion is the better part of valour
scruple
unmotivate
chicken-heart
fight shy of
backboneless
bedwetter
take a dare
cur
unfear
shithouse
nervelessness
disencourage
cobelligerency
shy
self-discipline
dastardize
self-denial
pantaphobia
self-control
argh
outbuy
God hates a coward
rabbit-hearted
scotch
bottle
set one's face against