bungling vs bumbling

bungling and bumbling both are adjectives.

Word	Noun	Adjective	Verb	Adverb
bungling	No	Yes	No	No
bumbling	No	Yes	No	No

As adjectives, bungling and bumbling are synonyms defined as:

bungling and bumbling: lacking physical movement skills, especially with the hands

Other synonyms of bungling include butterfingered, ham-fisted, ham-handed, handless, heavy-handed, left-handed.

bungling (adjective)	bumbling (adjective)
lacking physical movement skills, especially with the hands	lacking physical movement skills, especially with the hands
showing lack of skill or aptitude