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Definition of blastoff
blastoff
/ˈblæstˌɔːf/
(UK: blast-off)
blast · off
Plural:blastoffs
blastoff Lexical Profile
CEFR
B1
Grade
5
Tier
2
Usage
Top 10k
Syllables
2
blastoff Game Scores & Validity
Scrabble US
Scrabble UK
WWF
Wordle Guess
• noun
1
The moment or act of a rocket or spacecraft launching into the sky under the power of its engines.
Example
"Mission control monitored the telemetry closely during the final seconds before blastoff."
Synonyms
View all synonyms for blastoff Antonyms
View all antonyms for blastoffWord Nuance & Usage
As a noun, it is written as a single word ('blastoff') or hyphenated ('blast-off'), whereas the corresponding phrasal verb is always written as two separate words ('blast off').
• Rhymes for blastoff
Cite this Entry
Wordmom. (2026). Definition of Blastoff. In Wordmom Dictionary. Retrieved Nov 5, 2026, from https://wordmom.com/dictionary/blastoff