A standstill is a complete halt to all movement. Come to a standstill, at a standstill, traffic at a standstill.
It is always in a phrase with come to or at, and it means nothing is moving at all rather than merely slowly. In pay negotiations, a standstill agreement is one where both sides promise to change nothing while they talk.
1nounstandstillA complete halt to all movement.
“The strike brought the factory to a complete standstill for a week.”
standstill is a halt.
Stand plus still, on the model of the same compound in Dutch and German.
From stand + still, a a deverbal from stand still. Compare Dutch stilstand (“a standstill”), German Stillstand (“a standstill”), Danish stilstand (“a standstill”).
Etymology from Wiktionary, CC BY-SA