"Callback" 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

"callback" Definition

  1. [countable] a phone call that you make to somebody who has just called you
  2. Callback™, ringback [uncountable, countable] a phone service that you can use if you call somebody and their phone is being used, so that your phone will ring when the line is free; a call made using this service
  3. [uncountable, countable] (computing) a process by which the user of a computer or phone system proves their identity by contacting a computer, which then contacts them
  4. [countable] (especially North American English) an occasion when you are asked to return somewhere, for example for a second interview when you are trying to get a job

"callback" Synonyms & Antonyms

"callback" synonyms:

  • running-gag,

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