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Definition of fastball
fastball
/ˈfæstˌbɔːl/
fast · ball
Plural:fastballs
fastball Lexical Profile
CEFR
B2
Grade
6
Tier
2
Usage
Top 10k
Syllables
2
fastball Game Scores & Validity
Scrabble US
Scrabble UK
WWF
Wordle Guess
• noun
1
North American A baseball pitch thrown at full speed in a relatively straight trajectory, relying on velocity rather than sharp curvature to deceive the batter.
Example
"The relief pitcher struck out the final batter with a high fastball over the inside corner of the plate."
Synonyms
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Wordmom. (2026). Definition of Fastball. In Wordmom Dictionary. Retrieved Nov 5, 2026, from https://wordmom.com/dictionary/fastball