Capitulate
Etymology
From Medieval Latin capitulare, "to draw up under headings," from capitulum, "a little head" or "chapter," a diminutive of caput, "head." A surrender was originally set out as a document arranged under headings; over time the word for drafting those terms became the word for the surrender itself.
verb · /kuh-PICH-uh-layt/
To surrender or give in, usually after resisting.
What it names
The precise verb for yielding on agreed terms — the moment resistance ends and you accept the other side’s conditions.
Example
Management held firm for a month, then capitulated to nearly every demand the moment the strike gained public sympathy.
Related idea
Acquiesce is quiet, low-stakes consent; capitulate implies a real fight that you have finally lost.