Ant. Superiority, eminence, excellence, majority, elevation, independence, mastery, exaltation.
Infernal. Hellish; diabolical, devilish, fiendish, demoniacal, satanic, atrocious, nefarious, dark, accursed, abominable.
Ant. Angelic, cherubic.
Infest. Throng, overrun, beset, swarm in; disturb, plague, annoy, tease, harass, trouble, molest, torment, worry, pester.
Ant. Comfort, refresh, regale, gratify.
Infidel. Unbeliever, disbeliever, atheist, denier, freethinker, deist, skeptic, heretic.
Ant. Believer, pietist, devotee, Christian.
Infidelity. Unbelief, disbelief, skepticism; faithlessness, unfaithfulness, disloyalty.
Ant. Fidelity, belief, faith, religiousness, credulity, credulousness; faithfulness, loyalty.
Infinite. Absolute, illimitable, limitless, boundless, interminable, eternal, unlimited, unmeasured, measureless, unfathomable, unconditioned, numberless, unbounded, immeasurable, innumerable, countless.