Social greeting to re‑establish connection after a significant absence.

To signal recognition of the elapsed time and invite conversation about what each person has done during that gap.

Running into someone unexpectedly (e.g., at work, on public transport), receiving an unexpected phone call after months apart, seeing old acquaintances at social events.

Casual everyday conversations, friendly professional settings where tone is relaxed, meet‑ups among friends or colleagues who haven’t seen each other in years.

Long time no see!

Long time no see!

None

• "Hey! Long time no see!"
• "Well
• long time no see!"

• "It's been ages! It's been a while! Look who it is!"

Using the phrase with ‘you’ as in “Long time no see you” – incorrect; the idiom stands alone without an object.

"It feels like a lifetime! Haven't seen you for donkeys (UK)."

Speakers of languages that translate literally may produce awkward phrases like 'Long time not see' instead of the idiomatic expression.

• Reunion greetings: Fancy meeting you here! What a coincidence!

The phrasing carries a friendly, playful tone that breaks social ice quickly after a long period apart.

Instantly signals to the interlocutor that both parties recognize each other's absence, prompting reminiscence about shared experiences and easing conversation flow.

Long time, no see!

This chunk is a fixed expression commonly used in informal settings to acknowledge a long period of separation. It is widely accepted across various English-speaking regions and should not be confused with incorrect variations.

Long time no see → It's been ages → It feels like a lifetime!