adj

flightless

flīt'lĭs

adj

Unable to fly, especially describing a species or individual bird.

"The penguin is a flightless bird well adapted to swimming."

How to Use Flightless

Learner’s notes

In plain EnglishDescribes birds (or occasionally insects) that cannot fly, like penguins, ostriches, and emus.

Common pairings

flightless bird flightless species

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The penguin is a _____ bird well adapted to swimming.

From flight + the suffix -less ("without").

weightless