Dictionary.com
Thesaurus.com
Synonyms

liftoff

American  
[lift-awf, -of] / ˈlɪftˌɔf, -ˌɒf /
Or lift-off

noun

liftoffs plural
  1. Aeronautics, Rocketry.

    1. the action of an aircraft in becoming airborne or of a rocket in rising from its launching site under its own power.

    2. the instant when such action occurs.

  2. Informal. the launching or commencement of a project, plan, etc..

    The liftoff of the sales campaign will be next month.


adjective

  1. able to be shifted or removed by lifting off; capable of being lifted off.

    I organized the workshop with these liftoff adhesive labels for bins and shelves.

    We used magnetic liftoff nameplates on the lockers.

liftoff British  
/ ˈlɪftˌɒf /

noun

  1. the initial movement or ascent of a rocket from its launch pad

  2. the instant at which this occurs

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

verb

  1. (intr, adverb) (of a rocket) to leave its launch pad

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Other Word Forms

Noun Inflected Forms

Etymology

Origin of liftoff

First recorded in 1955–60; noun and adjective use of verb phrase lift off

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Along with Jersey Mike’s, Blackstone’s disclosed IPO plans include AI-powered digital marketer Liftoff Mobile, whose offering is back on track after being pulled in February amid an AI-driven tech-stock selloff.

From The Wall Street Journal • Jun. 1, 2026

Liftoff Mobile postponed its initial public offering, citing market conditions after another day of sharp declines in stocks.

From Barron's • Feb. 6, 2026

Eight private companies, including Forgent Power Solutions and Liftoff Mobile, are scheduled to debut on Wall Street this week.

From Barron's • Feb. 3, 2026

Liftoff, which also has a big minority stake investment from private-equity firm General Atlantic, would be worth $5.2 billion at the high end of its proposed $26 to $30 price range.

From Barron's • Feb. 3, 2026

Liftoff was routine until the ship reached the safe transition distance of ten diameters out.

From Fearful Symmetry A Terran Empire novel by Wilson, Ann

Vocabulary.com logo
by dictionary.com

Look it up. Learn it forever.

Remember "liftoff" for good with VocabTrainer. Expand your vocabulary effortlessly with personalized learning tools that adapt to your goals.

Take me to Vocabulary.com