"Ultrafast" validity in different word game dictionaries

Dictionary Validity
Scrabble US(US/Canada/Thailand - TWL/NWL) Yes
Scrabble UK(International - SOWPODS/CSW) Yes
Words with Friends(WWF) Yes

"ultrafast" Definition

  1. extremely or extraordinarily fast

"ultrafast" Synonyms & Antonyms

"ultrafast" synonyms:

  • hot,
  • breakneck,
  • accelerated,
  • blistering,
  • hypersonic,
  • lightning,
  • supersonic,
  • swift,
  • turbo,
  • alacritous,
  • fleeting,
  • meteoric,
  • ultrarapid,
  • expeditious,
  • zippy,
  • fast-moving,
  • quick,
  • rapid,
  • express

"ultrafast" antonyms:

  • slow,
  • ponderous,
  • crawling,
  • dawdling,
  • dragging,
  • laggard,
  • plodding,
  • lingering,
  • sluggish,
  • ultraslow,
  • creeping,
  • dallying,
  • lagging,
  • languid,
  • leisurely,
  • snaillike,
  • unhurried,
  • dillydallying,
  • tardy

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