"Extension" 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

"extension" Definition

  1. [uncountable, countable] extension (of something) the act of increasing the area of activity, group of people, etc. that is affected by something
  2. [countable] extension (to something) (North American English also addition) a new room or rooms that are added to a house
  3. [countable] a new part that is added to a building
  4. [countable] extension (of something) an extra period of time allowed for something
  5. [countable] (abbreviation ext.) an extra phone line connected to a central phone in a house or to a switchboard in a large building. In a large building, each extension usually has its own number.
  6. [uncountable, countable] the act of making something longer or larger; the thing that is made longer and larger
  7. (also hair extension) [countable, usually plural] pieces of artificial hair that are added to somebody's own hair to make it longer
  8. [countable] (used before another noun) a part of a college or university that offers courses to students who are not studying full-time; a programme of study for these students
  9. [countable] the set of three letters that are placed after the dot (= small round mark) at the end of the name of a file and that show what type of file it is
  10. [countable] (also extension lead (both British English), North American English extension cord) an extra length of electric wire, used when the wire on an electrical device is not long enough

"extension" Synonyms & Antonyms

"extension" synonyms:

  • expansion,
  • lengthening,
  • widening,
  • stretching,
  • elongation,
  • broadening,
  • prolongation,
  • spread,
  • heightening,
  • augmentation,
  • prolonging,
  • deepening,
  • enlargement,
  • dilatation,
  • distension,
  • drawing-out,
  • stretching-out,
  • spreading-out,
  • protraction

"extension" antonyms:

  • abbreviation,
  • abridgement,
  • abridgment,
  • contraction,
  • curtailment,
  • cutback,
  • shortening,
  • shrinking,
  • base,
  • body,
  • compression,
  • curl,
  • decrease,
  • lessening,
  • reduction,
  • subtraction,
  • digest,
  • condensation,
  • decline

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