"Booster" 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

"booster" Definition

  1. (also booster rocket) a rocket that gives a spacecraft extra power when it leaves the earth, or that makes a missile go further
  2. a device that gives extra power to a piece of electrical equipment
  3. an extra small amount of a vaccine that is given to increase the effect of one given earlier, for example to protect you from a disease for longer
  4. a thing that helps, encourages or improves somebody/something
  5. (especially North American English) a person who gives their support to somebody/something, especially in politics

"booster" Synonyms & Antonyms

"booster" synonyms:

  • immunisation,
  • immunization,
  • injection,
  • dose,
  • inoculation,
  • shot,
  • vaccination,
  • vaccine,
  • jab,
  • booster-dose,
  • fix,
  • hit,
  • needle,
  • hype,
  • prevention,
  • administration,
  • jag,
  • dosage,
  • pop

"booster" antonyms:

  • adversary,
  • antagonist,
  • opponent,
  • detractor,
  • rival,
  • foe,
  • enemy,
  • competitor,
  • contender,
  • opposer,
  • competition,
  • opposition,
  • corrival,
  • nemesis,
  • hostile,
  • challenger,
  • oppugnant,
  • bandit,
  • combatant

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