havent

Haven't I seen you somewhere before?

A phrase used when one recognizes someone or thinks they look familiar. It can also be used flirtatiously when trying to start a conversation with someone that one deems attractive. Haven't I seen you somewhere before? You look really familiar. "Haven't I seen you somewhere before?" is Ed's favorite pick-up line, even though it has a very low success rate with the ladies.
See also: seen, somewhere

haven't seen you in a long time

A phrase used when one encounters someone after having not seen them for a long period of time. Hey, Al, haven't seen you in a long time! How have you been?
See also: long, seen, time

haven't seen you in a month of Sundays

A phrase used when one encounters someone after an extremely long, often indefinite period of time. Hey, Al, haven't seen you in a month of Sundays! How have you been?
See also: month, of, seen, Sundays

Haven't we met before?

A phrase used when one recognizes someone or thinks they look familiar. It can also be used flirtatiously when trying to start a conversation with someone that one deems attractive. Haven't we met before? You look really familiar. "Haven't we met before?" is Ed's favorite pick-up line, even though it has a very low success rate with the ladies.
See also: met, we

I haven't got all day

I'm in a rush; I don't have much or any time to spare. How long is this repair job going to take? I haven't got all day!
See also: all

things haven't been easy

Said about a difficult or upsetting time in one's life. Things haven't been easy, so we're just trying to take it one day at a time right now. Things haven't been easy, but we'll survive.
See also: been, easy, thing
Farlex Dictionary of Idioms.

Haven't I seen you somewhere before?

 and Haven't we met before?
a polite or coy way of trying to introduce yourself to someone. Bob: Hi. Haven't I seen you somewhere before? Mary: I hardly think so. Bill (moving toward Jane): Haven't we met before? Jane (moving away from Bill): No way!
See also: seen, somewhere

(I) haven't seen you in a long time.

Fig. an expression of greeting, often said as part of a series. Mary: Hi, Fred! Haven't seen you in a long time. Fred: Yeah. Longtime no see. Tom: Well, John. Is that you? I haven't seen you in a long time. John: Good to see you, Tom!
See also: long, seen, time

(I) haven't seen you in a month of Sundays.

Rur. I haven't seen you in a long time. Tom: Hi, Bill Haven't seen you in a month of Sundays! Bill: Hi, Tom. Long time no see. Bob: Well, Fred! Come right in! Haven't seen you in a month of Sundays! Fred: Good to see you, Uncle Bob.
See also: month, of, seen, Sundays
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs.
See also:
  • be out of (one's) league
  • be out of somebody's league
  • (one) puts (one's) pants on one leg at a time
  • bell, book, and candle
  • bell, book, and candle things that are miraculous or that signal that
  • be (not) a patch on
  • bolo
  • a happy bunny
  • a happy camper
  • bring (someone or something) before (someone or something)