ufo

Estimated CEFR level: C2 — Proficiency

Estimated from word frequency; not an official CEFR classification.

Definition

noun an (apparently) flying object whose nature is unknown; especially those considered to have extraterrestrial origins

Reading of UFO as a word in its own right.

"UFO's aside, you can actually make sense." — Terminal Compromise, Winn Schwartau
"We got a UFO report..." "A flying saucer?" — The Sex Life of the Gods, M. E. (Michael E.) Knerr
In MIRACLE VISITORS, Ian Watson has created a fascinating novel that explores the UFO phenomenon, a novel that will endlessly intrigue and envelop the reader. — Lone Star Planet, H. Beam Piper

unidentified flying object, flying saucer

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