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