Progress. Advance, advancement, attainment, increase, improvement, proficiency, progression, growth, development.
Ant. Delay, check, retrogression, stay, stop, stoppage, falling off, relapse, decline, falling back.
Prohibit. Forbid, hinder, inhibit, interdict, preclude, prevent, debar, disallow.
Ant. Allow, empower, let, license, order, require, sanction, authorize, command, direct, enjoin, permit, warrant, suffer, tolerate, put up with, give permission, give consent, consent to.
Prolific. Fertile, fruitful, productive, generating, teeming, active.
Ant. Barren, sterile, unproductive, unfruitful, effete.
Prolix. Long, diffuse, tiresome, prolonged, protracted; wordy, verbose, prosaic, rambling, discursive; tedious, wearisome.
Ant. Condensed, terse, concise, brief, laconic, curt, epigrammatic.
Prominent. Projecting, manifest, protuberant, conspicuous; eminent, distinguished, famous, celebrated, important, main, principal, leading, characteristic.
Ant. Receding, hollowed, concave, indented, engraved; insignificant, secondary, unimportant, minor, indistinguishable, indistinct, subordinate, inconspicuous, trivial, immaterial, unessential.