slip up

Related to slip up: blunder

slip up

1. verb To blunder; to make a mistake or an error. I think I slipped up and sent the check to the wrong address. Wow, it looks like the accountants must have really slipped up this time.
2. verb To interfere with someone or their ability to do something; to cause someone to make a mistake or an error. In this usage, a noun or pronoun can be used between "slip" and "up." I have to concentrate while I do this, so please don't talk and slip me up! She always uses intimidation tactics to try to slip up her opponents.
3. noun A minor mistake, blunder, or mishandling. In this usage, the phrase is often hyphenated. He's had one too many slip-ups in the office, so I think we have to let him go. He was overcharged due to a slip up on our end.
See also: slip, up
Farlex Dictionary of Idioms.

slip up something

to climb something, slipping along the way. The hikers slipped up the wet slope. Ted slipped up the stairs, tracking mud and water as he went along.
See also: slip, up

slip up

to make an error. I hope you don't slip up again. Try to be more careful.
See also: slip, up
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs.

slip up

Make a mistake, blunder, as in I slipped up and gave the invitations to the wrong people. [Mid-1800s]
See also: slip, up
The American Heritage® Dictionary of Idioms by Christine Ammer.

slip up

v.
1. To make a mistake or blunder; err: I slipped up when I said my plane would arrive at 6:00 am—I meant 6:00 pm.
2. To cause someone to make a mistake or blunder: The change in plans slipped me up and I went to the wrong subway station. The false clue slipped up the detective.
See also: slip, up
The American Heritage® Dictionary of Phrasal Verbs.

slip

verb
See slip up

slip (up)

1. in. to make an error. Don’t slip up and pay this bill twice, please.
2. and slip(-up) n. an error. That was a silly slip-up. I’m sorry.
See also: slip, up

slip(-up)

verb
See slip up
McGraw-Hill's Dictionary of American Slang and Colloquial Expressions
See also:
  • goof
  • goofed
  • down
  • check out
  • check out, to
  • check something out
  • checkout
  • be in
  • cross over
  • face-off
References in periodicals archive
Sir Bobby Robson's men ensured there were no slip ups against the Swiss league leaders with an assured display.
Football: No hassle for Castle; Newcastle 1 FC Basel 0 (Newcastle win 4-2 on agg)
The Stockingford outfit are strong favourites for the title although Hare & Hounds are well placed to launch a strong challenge should the leaders make any slip ups in their remaining couple of games.
Hearty Goodfellow closing in on title; SUNDAY POOL
Frank Rijkaard's side have the chance to move three points further ahead with a win at Real Betis tonight and Ranieri can't afford any more slip ups if his side are to hold on to their title.
Football: RANIERI COULD BE IN REAL TROUBLE
With Switzerland facing Russia on Saturday and then Albania in midweek, Kerr knows Ireland can afford no more slip ups.
Football: BRIAN APPEALS FOR SIX
com/technet but is unable to guarantee there'll be no more slip ups.
kelly's i: Net News