antithetical (adj.)
- adversative
- adverse
- alien
- antagonistic
- anti
- antipathetic
- antipodal
- antipodean
- antithetic
- antonymous
- balancing
- clashing
- competitive
- conflicting
- contradictory
- contrarious
- contrary
- converse
- counter
- counterpoised
- cross
- discordant
- discrepant
- dissentient
- facing
- fractious
- hostile
- inconsistent
- inimical
- inverse
- negative
- obstinate
- opponent
- opposed
- opposing
- opposite
- oppositive
- perverse
- polar
- polarized
- recalcitrant
- refractory
- repugnant
- reverse
- uncooperative
- unfavorable
- unfriendly
- unpropitious
