| Main Entry: | |
| Part of Speech: | adjective |
| Definition: | fast, quick |
| Synonyms: | accelerated, agile, alacritous, breakneck, brisk, expeditious, express, fleet, harefooted, hasty, headlong, hurried, immediate, lissome, lively, nimble, precipitate, prompt, quick-fire, rapid, rapid-fire, ready, snappy, summary, supersonic, swift, ultrasonic, winged |
| Antonyms: | delayed, halted, slowed, tardy |
| Main Entry: | adulterous |
| Part of Speech: | adjective |
| Definition: | unfaithful |
| Synonyms: | cheating, double-crossing, extracurricular, fast and loose, illicit, immoral, moonlighting, speedy*, two-faced, two-timing, unchaste |
| Antonyms: | chaste, clean, pure, virginal |
| Main Entry: | breakneck |
| Part of Speech: | adjective |
| Definition: | extremely fast |
| Synonyms: | at full tilt, dangerously fast, excessive, flat out, headlong, high-speed, lightning, precipitate, rapid, reckless, speedy, whirlwind |
| Antonyms: | extremely slow |
| Main Entry: | brisk |
| Part of Speech: | adjective |
| Definition: | fast-moving; active |
| Synonyms: | adroit, agile, alert, animated, bustling, busy, energetic, lively, nimble, quick, speedy, sprightly, spry, vigorous, vivacious, zippy |
| Antonyms: | inactive, slow, sluggish, unenergetic |
| Main Entry: | cursory |
| Part of Speech: | adjective |
| Definition: | casual, hasty |
| Synonyms: | brief, careless, depthless, desultory, fast, half-assed, half-baked, haphazard, hit or miss, hurried, offhand, passing, perfunctory, quick, random, rapid, shallow, short, sketchy, slapdash, slight, sloppy, speedy, summary, superficial, swift, uncritical |
| Notes: | cursory means 'superficial'; cursorial is 'pertaining or adapted to running' |
| Antonyms: | complete, meticulous, painstaking, perfect, thorough, unhurried |
| Main Entry: | early |
| Part of Speech: | adjective |
| Definition: | sooner than expected |
| Synonyms: | advanced, ahead of time, anticipative, anticipatory, before appointed time, beforehand, direct, immature, immediate, matinal, on short notice, on the dot, overearly, oversoon, preceding, precipitant, precocious, preexistent, premature, previous, prompt, pronto, punctual, quick, seasonable, soon, speedy, unanticipated, unexpected, untimely |
| Antonyms: | later |
| Main Entry: | fleet |
| Part of Speech: | adjective |
| Definition: | quick in movement |
| Synonyms: | agile, barreling, breakneck, brisk, expeditious, expeditive, fast, flying, hasty, in nothing flat, like greased lightning, lively, mercurial, meteoric, nimble, nimble-footed, on the double, rapid, screaming, speedball, speedy, swift, winged |
| Antonyms: | clumsy, slow |
| Main Entry: | flying |
| Part of Speech: | adjective |
| Definition: | in the air, winged |
| Synonyms: | aerial, aeronautical, airborne, avian, drifting, express, flapping, fleet, floating, fluttering, gliding, hovering, mercurial, mobile, on the wing, plumed, soaring, speedy, streaming, swooping, volant, volar, volitant, waving, winging, zooming |
| Antonyms: | ground, grounded |
| Main Entry: | hurried |
| Part of Speech: | adjective |
| Definition: | quick, rushed |
| Synonyms: | abrupt, breakneck, brief, cursory, fast, hasty, headlong, hectic, impetuous, perfunctory, precipitant, precipitate, precipitous, rushing, short, slapdash, speedy, subitaneous, sudden, superficial, swift |
| Antonyms: | easily, leisurely, slow, unhurried, unrushed |