The story
- Latin · derived fromostensus
- French · borrowed fromostensible
- English todayostensible
Borrowed from French ostensible, formed with the suffix -ible, from Latin ostensus, the past participle of ostendō (“show”), itself from obs- (“in front of”) (akin to ob- (“in the way”)) + tendō (“stretch”) (akin to Ancient Greek τείνω (teínō)). Cf. ostentatious.
Etymology from Wiktionary, CC BY-SA 4.0.