scuttle
antipositional
come the raw prawn
spike someone's guns
poke the bear
sabotage
counteract
burn one's bridges
self-sabotage
shoot oneself in the foot
get in someone's hair
misempower
discompose
cheek up to
cheek up
obstructivism
damn by association
smirch
muscle in on
smear
impoverishment
blot
coerce
stain
tie someone's hands
it's an ill bird that fouls its own nest
strike
spot
non-aggression principle
extort
self-renunciation
ratfuck
tin god
saboteur
cut off one's nose to spite one's face
destructive criticism
treacherous
challenge
dragoon
perversion
self-destruct
self-incriminate
tyrant
manipulation
use
subversive
assassinate
step on someone's toes
embarrass
unlock
scupper
comb someone's hair the wrong way
injury
self-own
runaway
eat one's young
obstructionist
eat someone's heart
trickery
at the expense of
menace
ass-licker
contortion
allision
foul one's own nest
impalement
stand in one's own light
oversway
spite
stab
obstructor
treachery
trip
divest
thwarter
robbery
nobble
overthrowal
spit in someone's face
resister
obstructer
traverse
harrying
underminer
contempt
self-annihilate
victimization
dick
larrikinism
antirrhesis
bamboozle
snoot
foiling
roll up on
mortify
affray
defile
out of house and home
frustration