treacherous
8 antonyms and opposites of treacherous.
Adj — Willing to betray trust; disloyal and deceitful.
Synonyms for treacherous
booky
dastardly
disleal
disloyal
double-dealing
double-crossing
double-faced
double-hearted
doublehearted
faithless
false
false-hearted
falseheart
guiled
guileful
hollow-hearted
illoyal
infidelitous
insidious
Judaslike
Judasly
nonfaithful
perfidious
proditory
proditorious
Punic
ratlike
recreant
renegade
reptilian
reptitious
swike
traitorish
traitorlike
traitorly
traitorous
traitorsome
treachersome
trothless
unfaithful
unleal
unloyal
unsteadfast
untrue
viperish
viperous