Fôr'mi-da-ble, a.

a. [Lat. formidabilis, from formidare, to fear, dread; Fr. & Sp. formidable, It. formidabile.] Exciting fear or apprehension; impressing dread; adapted to excite fear and deter from approach, encounter, or undertaking; alarming.

They seemed to fear the formidable sight. Dryden.

I swell my preface into a volume, and make it formidable, when you see so many pages behind. Dryden.

Synonyms—Dreadful; fearful; terrible; frightful; shocking; horrible; terrific; tremendous.