instantly

adverb

1. immediately; at once.
2. urgently.

conjunction

3. as soon as; directly: I recognized her instantly she entered the room.

adverb

1. immediately; at once
2. archaic urgently or insistently

adv.

late 15c., “urgently, persistently,” from instant (adj.) + -ly (2). Meaning “immediately” is 1550s.