とっさ咄嗟tossaにni
1.
In a manner that indicates an immediate and instinctive response to a situation, often without prior thought or delay.
2.
Acting or reacting quickly in a critical moment, as if instinctively responding to an unforeseen circumstance.
3.
Performing an action instantaneously, often as a result of urgency or necessity, suggesting a high level of alertness.