brittle (part of speech: adjective)
feeble (part of speech: adjective)
excitable (part of speech: adjective)
edgy, volcanic, ardent, cranky, tempestuous, hot-tempered, nervous, excitable, sensitive, fiery, short-tempered, crusty, impulsive, emotional, brittle, passionate, irritable, rash, reckless, stormy, quick-tempered, explosive, touchy, combustible, high-strung, volatile
- For light, though so fragile, is perhaps the one thing of all that yields naught of itself as it faces immensity. - "Wisdom and Destiny", Maurice Maeterlinck.
- But his hands were old, delicate, fine and fragile; and the lips beneath the drooping white mustache at times trembled, almost imperceptibly, with the generous sentiments that come with mellow age. - "The Black Bag", Louis Joseph Vance.
- Her emotions were very delicate, very fragile, and enormously difficult to perceive. - "Linda Condon", Joseph Hergesheimer.