rapid; fast-moving; violent or sudden in force

Suffix used after verbs or adjectives to form nouns expressing a state, quality, or scope, similar to English "-ity", "-ness", or "-ism".

hot-tempered; impatient; to get annoyed or angry easily

temperament; disposition; temper (as in 性急 xìng​jí, 任性 rèn​xìng)