Stumbles, noun plural of stumble. Synonyms in the same form.
Error
errors, blunders, slip-ups, slips, mistakes, faults, goofs, boo-boos, lapses, gaffes, bloopers, defects, fluffs, floaters, flubs, botches, bungles, boners, solecisms, thinkos
Trip
trips, mis-steps
Stagger
staggers, lurches
Other
founders
All synonyms for stumble →