bucking
UK[ˈbʌkɪŋ]US[ˈbʌkɪŋ]
v
(of a horse or similar animal) to jump into the air, kicking out with the hind legs and arching the back
v
(of a vehicle or machine) to jerk or jolt suddenly and violently
v
(informal) to oppose or resist something stubbornly
Etymology
The verb "buck" traces its lineage to the Proto-Germanic root būganą, meaning "to bend" or "to bow." This ancient sense of a forceful, bending motion directly informs the primary modern meaning of a horse's violent, arched leap. The semantic journey extends this core idea of a sudden, resistant bend or jerk to describe the jolting of machinery and, metaphorically, a person's stubborn opposition to authority or trend. Thus, from a simple concept of physical bending, the term evolved to capture a range of actions characterized by a sharp, upward, and resistant force.
Analysis
The word "bucking" is a present participle or gerund derived from the verb "buck." The verb "buck" is a simplex word of Germanic origin, likely related to the Middle Low German bukken (to bend, bow) or Old English būgan (to bend, bow). Its core sense relates to a sudden, arching, or bending motion.
Examples
The wild horse started bucking as soon as the rider mounted.
The old truck went bucking down the rutted dirt road.
He has a history of bucking the system and challenging established rules.