cosmic

adjective

cos·​mic ˈkäz-mik 

variants or less commonly cosmical

ˈkäz-mi-kəl 

1

a

: of or relating to the cosmos, the extraterrestrial vastness, or the universe in contrast to the earth alone

cosmic radiation

b

: of, relating to, or concerned with abstract spiritual or metaphysical (see metaphysical sense 2) ideas

cosmic wisdom

2

: characterized by greatness especially in extent, intensity, or comprehensiveness

a cosmic thinker

a book of cosmic significance

cosmically

ˈkäz-mi-k(ə-)lē 

adverb

Synonyms of cosmic

• giant
• gigantic
• huge
• vast
• tremendous
• enormous
• massive
• colossal
• astronomical
• mammoth
• monumental
• bumper
• immense
• titanic
• galactic
• monster
• planetary
• monstrous
• mountainous
• grand
• oceanic

Examples of cosmic in a Sentence

The discovery caused a cosmic shift in people's views of the world.

predicted that the war would forever be regarded as a cosmic error

Recent Examples on the Web

Discovered in 2004 while traveling on an alarming potential collision course with our planet, the near-Earth asteroid Apophis is now better known as the best example yet of our world dodging a cosmic bullet. — Andrew Jones, Scientific American, 30 July 2026

This place has a mysterious spiritual atmosphere, shaped by the idea of sacred cosmic energy and stories of warriors who gained supernatural powers through intense training. — Shivani Vora, Forbes.com, 29 July 2026

The solar eclipse in Leo on August 12 could amount to a revolving cosmic doorway of sorts, one where important relationships both exit and enter as the curtains close and open again in the ongoing drama of your life. — Steph Koyfman, Condé Nast Traveler, 29 July 2026

Another great way to capitalize on this cosmic flow is to revamp your diet or fitness plan. — Tabitha Parent, PEOPLE, 29 July 2026

Word History

Etymology

Greek kosmikos, from kosmos order, universe

First Known Use

1685, in the meaning defined at sense 1a

Phrases Containing cosmic

• cosmic background radiation
• cosmic dust
• cosmic microwave background
• cosmic noise
• cosmic ray
• cosmic string

Rhymes for cosmic

• osmic
• microcosmic

Kids Definition

cosmic

adjective

cos·​mic ˈkäz-mik 

1

: of or relating to the cosmos

cosmic theories

2

: extremely vast : grand

cosmic dimensions