adversary
adversative
adverse
alien
antagonistic
anti
antipathetic
antithetic
clashing
competitive
complaining
con
conflicting
contradictory
contrary
counter
cross
disaccordant
disputatious
disputing
dissentient
dissenting
enemy
fractious
hostile
indocile
inimical
insubordinate
intractable
negative
noncooperating
objecting
obstinate
obstructive
on the barricades
opponent
opposed
opposing
opposite
oppositional
oppositive
oppugnant
overthwart
perverse
proof against
protesting
rebellious
recalcitrant
refractory
reluctant
55-year-old
blued
endonuclease
glycosphingolipid
lifetyle
nonaggressive
random-walk
signiwcant
spin-network
undulatory
voluntaristic