(New American Roget's College Thesaurus)
adv. speedily, hastily, at top speed, apace, expeditiously, swiftly. See rashness, velocity, haste. Ant., slowly, at one's leisure.
(Roget's IV) modif.
Syn. swiftly, speedily, hastily; see quickly 1 .
(Roget's Thesaurus II) adverb In a rapid way: apace, fast, quick, quickly. Informal: flat out, hell-for-leather, lickety-split, pronto. Idioms: full tilt, in a flash, in nothing flat, like a bat out of hell, like a blue streak, like a flash, like a house on fire, like a shot, like a streak, like greased lightning, like the wind, like wildfire. See FAST.

English dictionary for students. 2013.


Look at other dictionaries:

  • Posthaste — Post haste, adv. With speed or expedition; as, he traveled posthaste; to send posthaste. Shak. [1913 Webster] …   The Collaborative International Dictionary of English

  • Posthaste — Post haste , n. Haste or speed in traveling, like that of a post or courier. Shak. [1913 Webster] …   The Collaborative International Dictionary of English

  • posthaste — index rapid Burton s Legal Thesaurus. William C. Burton. 2006 …   Law dictionary

  • posthaste — 1540s, usually said to be from post haste instruction formerly written on letters (attested from 1530s), from POST (Cf. post) (3) system for sending mail + haste. The verb post to ride or travel with great speed is recorded from 1550s …   Etymology dictionary

  • posthaste — [adj/adv] fast at once, breakneck*, directly, double quick*, expeditious, flat out*, fleet, fleetly, full tilt*, hastily, hasty, headlong, lickety split*, pell mell*, promptly, pronto, quick, quickly, rapid, rapidly, speedily, speedy,… …   New thesaurus

  • posthaste — [pōst′hāst′] n. Archaic great haste, as of a postrider adv. with great haste …   English World dictionary

  • posthaste — I. noun Etymology: 3post Date: 1545 archaic great haste II. adverb Date: 1569 with all possible speed III. adjective Date: 1604 obsolete …   New Collegiate Dictionary

  • posthaste — /pohst hayst /, adv. 1. with the greatest possible speed or promptness: to come to a friend s aid posthaste. n. 2. Archaic. great haste. [1530 40; POST3 + HASTE] * * * …   Universalium

  • posthaste — adverb /ˌpəʊstˈheɪst,ˌpoʊstˈheɪst/ quickly, as fast as someone travelling post; with great speed It is imperative that you finish your task posthaste. Syn: ASAP, quickly …   Wiktionary

  • posthaste — Synonyms and related words: amain, apace, at flank speed, breakneck, by airmail, by cable, by express, by return mail, by telegraph, double quick, expeditious, expeditiously, express, fast, flat out, fleet, full tilt, hand over fist, hand over… …   Moby Thesaurus

  • posthaste — /poʊstˈheɪst / (say pohst hayst) adverb 1. with all possible speed or promptness: to come posthaste. –noun 2. Obsolete great haste. {post3 + haste} …   Australian English dictionary