opa

Fetched 2026-10-26 (cache).

Datamuse reports no synonyms or antonyms for this word.

Noun

1. {{lb|en|countable}} {{abbreviation of|en|optionally piloted aircraft}}.
2. {{lb|en|uncountable}} {{init of|en|[[offensive]] [[patent]] [[aggregation]]}}.

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