stumbling
stum-bling
adjective
Characterised by difficulty, errors, or an unsteady, hesitant manner.
"The team made stumbling progress on the project."
noun
The act of losing balance, making errors, or speaking hesitantly.
"His frequent stumbling caused concern."
Thesaurus
Synonyms: bumble, stumble, falter, trip up, slip up, trip, stagger, lurch, hit, misstep, trip-up