trip up

Verb
1. detect a blunder or misstep; "The reporter tripped up the senator"
(synonym) catch
(hypernym) learn, hear, get word, get wind, pick up, find out, get a line, discover, see
(derivation) trip, trip-up, stumble, misstep
2. cause to stumble; "The questions on the test tripped him up"
(synonym) trip
(cause) stumble, trip
3. make an error; "She slipped up and revealed the name"
(synonym) stumble, slip up
(hypernym) err, mistake, slip
(derivation) trip, trip-up, stumble, misstep

Noun
1. an unintentional but embarrassing blunder; "he recited the whole poem without a single trip"; "he arranged his robes to avoid a trip-up later"; "confusion caused his unfortunate misstep"
(synonym) trip, stumble, misstep
(hypernym) blunder, blooper, bloomer, bungle, foul-up, fuckup, flub, botch, boner, boo-boo
(derivation) trip up, catch

make a mistake The teacher tripped up over the correct pronunciation of the president`s name.