упере́ться

rare #16320C2

verbreflexiveperfective imperfective is упира́ться

1.
to brace (against), to rest (against), to set (against), to prop oneself (on)
Он упёрся рука́ми в стол.
He propped his hands on the table.
во что? / чем? - with the point of contact in the accusative
2.
to run into, to come up against, to bump (into)
Он вы́прямился и упёрся голово́й в потоло́к.
He straightened up and bumped his head against the ceiling.
3.
to balk, to jib, to refuse stubbornly, to dig in one's heels
Стари́к упёрся и не захоте́л уходи́ть.
The old man dug in his heels and refused to leave.
colloquial
4.
to be held up (by), to be hampered, to hinge (on), to come down (to)
Всё упёрлось в деньги.
It all came down to money.
colloquial; of an affair or plan

Examples

Мальчик упёрся и не хотел идти домой.
The boy dug in his heels and didn’t want to go home.
Всё упёрлось в нехватку денег.
Everything came down to a lack of money.
Он упёрся руками в стену.
He braced his hands against the wall.

Imperative
ты	упри́сь
вы	упри́тесь

Active present	-
Active past	упёршийся	stubborn, obstinate, unyielding
Passive present	-
Passive past	-
Gerund present	-
Gerund past	упёршись уперевшись	while doing (past)