wait a minute/moment/second
1 of 2phrase (1)
1
—used to tell someone to stop and wait briefly
Wait a minute. I need to tie my shoe.
If you will just wait a second, I can explain what happened.
2
—used to interrupt someone or something because one has noticed, thought of, or remembered something
Wait a second—that's not what she said.
Wait a minute. I just remembered where I put the keys.
wait/just a minute
2 of 2phrase (2)
informal
1
—used to tell someone to wait or to stop for a brief time
"Aren't you finished yet?" "Just a minute. I'm almost done."
Wait a minute—I didn't hear you. Could you repeat what you said?
Wait just a minute, young man. Where do you think you're going?
2
—used to express surprise or disbelief
Hey, wait a minute! That's not what you said yesterday!
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Merriam-Webster unabridged



