Definition of overspeed
(Entry 1 of 3)
: speed greater than normal or rated speed
subjected to overspeeds — Time
overspeed
verbDefinition of overspeed (Entry 2 of 3)
: to cause (as an engine) to run at an excessive speed
: to run at an excessive speed
overspeed
adjectiveDefinition of overspeed (Entry 3 of 3)
: operated or operating at greater than normal or rated speed
Keep scrolling for more
Test Your Vocabulary
Slippery Words Quiz—Changing with the Times
- What is an earlier meaning of nice?

Can you spell these 10 commonly misspelled words?
TAKE THE QUIZ
Anagram puzzles meet word search.
TAKE THE QUIZLove words? Need even more definitions?
Merriam-Webster unabridgedWords at Play
Ask the Editors
Word Games
Slippery Words Quiz—Changing with the Times
Do you know these earlier meanings of words?
Take the quizWords of Snow and Ice Quiz
A selection of words from the chillier parts of t...
Take the quizSpell It
Can you spell these 10 commonly misspelled words?
Take the quizSCRABBLE® Sprint
SCRABBLE® fans, sharpen your skills!
Play the game
Share overspeed