impulsive
UK[ɪmˈpʌlsɪv]US[ɪmˈpʌlsɪv]
adj
Acting or done without forethought; controlled by emotion rather than reason.
adj
(Physics) Acting as an impulse.
Morpheme Breakdown
im
puls
ive
im
in, into
puls
drive, push
ive
adjective suffix
Etymology
The word 'impulsive' originates from the Latin verb 'impellere', meaning "to drive forward, urge on," which is itself composed of 'in-' (into) and 'pellere' (to drive, push). The past participle stem 'impuls-' gave rise to the noun 'impulse', denoting a driving force or sudden urge. By adding the adjectival suffix '-ive', the word evolved to describe the quality of being driven by such sudden internal forces. Thus, the modern meaning retains the core logic of the original Latin components: being acted upon by (im-) an inward driving force (puls) that characterizes (-ive) one's behavior.
Analysis
Structure: im (in, into) + puls (drive, push) + ive (adjective suffix)
- im: Latin prefix, a form of 'in-' meaning "in, into, toward, on".
- puls: Latin root from 'pellere' (to drive, push, strike), appearing in English as 'puls-'.
- ive: Latin suffix '-ivus', forming adjectives meaning "tending to, having the nature of".
Examples
He later regretted his impulsive decision to buy the expensive car.
Her impulsive generosity often led her to help strangers in need.
The impulsive force of the collision was measured by the sensors.