accident prone

inclined to having accidents, tending to get into mishaps

Accident-proneness is the conception that some people have a predispositions to be more likely to have accidents, such as car crashes and industrial injuries, than other people. The early work on this subject dates back to 1919, in a study by Greenwood and Woods, who studied workers at a British munitions factory and found that accidents were unevenly distributed among workers, with a relatively small proportion of workers account for most of the accidents. Further work on accident-proneness was carried out in the 1930s and 1940s, and the subject is still being studied actively.
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Adjective
1. having more than the average number of accidents
(similar) inclined(p)

adjective
(person) who has awkward movements and frequently has or causes minor accidents

Synonyms and related words:
breakneck, careless, desperate, devil-may-care, furious, harum-scarum, hasty, headlong, hotheaded, hurried, impetuous, mad, overeager, overenthusiastic, overzealous, precipitant, precipitate, precipitous, reckless, slap-bang, slapdash, wanton, wild