at once (a) (action) | immediatamente (a) (action) |
at once (a) (action) | subito (a) (action) |
at once (o) (time) | subito (o) (time) |
at once (o) (promptly) | con prontezza (o) (promptly) |
at once (o) (promptly) | subito (o) (promptly) |
at once (o) (time) | immediatamente (o) (time) |
at once (o) (promptly) | prontamente (o) (promptly) |