ufo

Fetched 2026-10-26 (cache).

Datamuse reports no synonyms or antonyms for this word.

Noun

1. {{senseid|en|Q421}} {{C|en|Ufology}} {{initialism of|en|unidentified flying object<id:Q421>}}; {{i|loosely}} an [[alien]] [[spacecraft]]. {{defdate|from 20th c.}}
2. {{lb|en|colloquial}} An "unfinished object" in [[knitting]] or other kinds of [[craft]]. {{defdate|from 20th c.}}
3. {{lb|en|astronomy}} {{initialism of|en|[[ultrared]] [[flattened]] [[object]]}}. {{defdate|2022}}

Source: Wiktionary · CC BY-SA 4.0 (Wiktionary dump) · cached copy, not a rewrite.