BUTTERFINGERED
bumbling, bungling, butterfingered, ham-fisted, ham-handed, handless, heavy-handed, left-handed
(adjective) lacking physical movement skills, especially with the hands; “a bumbling mechanic”; “a bungling performance”; “ham-handed governmental interference”; “could scarcely empty a scuttle of ashes, so handless was the poor creature”- Mary H. Vorse
Source: WordNet® 3.1
Etymology
Adjective
butterfingered (comparative more butterfingered, superlative most butterfingered)
Prone to dropping things; clumsy.
Synonyms: ambilevous (rare), ambisinistrous
Source: Wiktionary
But"ter-fin`gered, a.
Definition: Apt to let things fall, or to let them slip away; slippery;
careless.
Source: Webster’s Unabridged Dictionary 1913 Edition