trip up

US /trɪp ʌp/
UK /trɪp ʌp/
"trip up" picture
1.

to make a mistake or cause someone to make a mistake

:
•
He tends to trip up on simple calculations.
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The lawyer tried to trip up the witness during cross-examination.
:
stumbleerrblundermisstepfalter
2.

to catch one's foot on something and stumble or fall

:
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Be careful not to trip up on the loose rug.
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He tripped up on the stairs and almost fell.
:
stumblefalllose one's footing
:
tripday tripround tripfield triproad tripego tripon the up and up