hasty (adj.)
- abrupt
- accident-prone
- ad-lib
- advanced
- agile
- antsy
- anxious
- bearish
- brash
- breakneck
- breathless
- brief
- brisk
- careless
- choleric
- combustible
- contentious
- cranky
- cursory
- dashing
- desperate
- devil-may-care
- double-quick
- eager
- edgy
- electrifying
- excited
- expeditious
- explosive
- express
- extemporaneous
- fast
- feverish
- fiery
- fleet
- fleeting
- flying
- forward
- fretful
- furious
- half-baked
- haphazard
- harum-scarum
- headlong
- heedless
- hopped-up
- hot
- hot-tempered
- hotheaded
- hurried
- ill-advised
- ill-considered
- immediate
- impatient
- impetuous
- impromptu
- improvised
- impulsive
- incautious
- inconsiderate
- instant
- instantaneous
- irascible
- irritable
- last-minute
- light-footed
- lively
- mad
- madcap
- makeshift
- mercurial
- momentary
- nimble
- overeager
- overenthusiastic
- overhasty
- overzealous
- passing
- passionate
- peppery
- perfunctory
- petulant
- precipitant
- precipitate
- precipitous
- precocious
- premature
- previous
- prompt
- quick
- quick-tempered
- rapid
- rash
- reckless
- restive
- restless
- rough-and-ready
- running
- rushed
- rushing
- shocking
- short-tempered
- slapdash
- snappy
- spanking
- speedy
- splenetic
- spunky
- startling
- sudden
- superficial
- surprised
- surprising
- swift
- testy
- thoughtless
- unanticipated
- uncontrived
- uncrystallized
- uneasy
- unexpected
- unforeseen
- unhatched
- unlooked-for
- unmade
- unorganized
- unplanned
- unpredicted
- unpremeditated
- unprepared
- unquiet
- unready
- unripe
- unstudied
- unthinking
- untimely
- urgent
- volatile
- volcanic
- wanton
- waspish
- wild
- winged
In rage deaf as the sea, hasty as fire.