adverb
right now; immediately; at once
Emphasizes doing something without delay; stronger and more urgent than すぐ.
今すぐ来てください。
Please come right now.
今すぐ始めましょう。
Let's start immediately.
すぐ means 'soon' or 'immediately' but is less urgent; 今すぐ explicitly adds 'now' for stronger immediacy.
直ちに is more formal and often used in official or written contexts, while 今すぐ is common in everyday speech.
Compound of 今 (ima, 'now') and すぐ (sugu, 'immediately'), reinforcing the sense of urgency.