opponent (n.)
opponent (adj.)
- adversative
- adverse
- alien
- antagonistic
- anti
- antipathetic
- antithetic
- clashing
- combatant
- competitive
- conflicting
- contradictory
- contrary
- counter
- cross
- dissentient
- fractious
- hostile
- inimical
- negative
- obstinate
- opposed
- opposing
- opposite
- oppositive
- perverse
- recalcitrant
- refractory
- repugnant
- uncooperative
- unfavorable
- unfriendly
- unpropitious
