once

⁴once

conjunction

Definition of ONCE

: at the moment when : as soon as <once she spoke, I recognized her>

Examples of ONCE

1. Once she spoke, I recognized her.
2. <you should have stopped wrestling once you knew someone was getting hurt, not five minutes later>

First Known Use of ONCE

1761

Related to ONCE

Synonyms: as soon as, immediately [chiefly British], instantly, when

Near Antonyms: after, directly [chiefly British], since

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