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

Thus, with gravity the ultimate winner of this cosmic tug of war, the star's core collapses, sending violent shockwaves rippling outward into the outer stellar layers, which are ripped away. — Robert Lea, Space.com, 10 July 2026

Look toward the eastern sky to catch the cosmic lineup in the early morning. — Eric Lagatta, USA Today, 10 July 2026

What begins as misjudgment, the official synopsis teases, spirals through human conflict into tragedy on a cosmic scale. — Patrick Brzeski, HollywoodReporter, 9 July 2026

The assertion, if true, would overturn decades of cosmic dogma. — Joseph Howlett, Scientific American, 9 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