Helpless (adjective)
Unable to defend oneself.
Helpless (adjective)
Unable to act without help.
Helpless (adjective)
Uncontrollable.
“a helpless urge”
Helpless (adjective)
From which there is no possibility of being saved.
Hapless (adjective)
Very unlucky; ill-fated.
Hapless (adjective)
Devoid of talent or skill.
Wiktionary
Helpless (adjective)
unable to defend oneself or to act without help
“the cubs are born blind and helpless”
Helpless (adjective)
uncontrollable
“they burst into helpless laughter”
Hapless (adjective)
(especially of a person) unfortunate
“the hapless victims of the disaster”
Oxford Dictionary