Letters that make trip-up
p, r, t, i, u are letters that make 'trip-up'
1 possible definitions for 'trip-up'
Under this definition, trip-up is a noun and has the following properties:
'trip-up' can be a type of botch, blunder, blooper, bloomer, bungle, pratfall, foul-up, fuckup, flub, boner, boo-boo.
"he recited the whole poem without a single trip", "he arranged his robes to avoid a trip-up later", "confusion caused his unfortunate misstep"