The difference between Confirm and Infirm
When used as verbs, confirm means to strengthen, whereas infirm means to contradict, to provide proof that something is not.
Infirm is also adjective with the meaning: weak or ill, not in good health.
check bellow for the other definitions of Confirm and Infirm
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Confirm as a verb:
To strengthen; to make firm or resolute.
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Confirm as a verb (transitive, Christianity):
To administer the sacrament of confirmation on (someone).
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Confirm as a verb:
To assure the accuracy of previous statements.
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Infirm as an adjective:
Weak or ill, not in good health.
Examples:
"He was infirm of body but still keen of mind, and though it looked like he couldn't walk across the room, he crushed me in debate."
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Infirm as an adjective:
Irresolute; weak of mind or will.
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Infirm as an adjective:
Frail; unstable; insecure.
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Infirm as a verb:
To contradict, to provide proof that something is not.
Examples:
"The thought is that you see an episode of observation, experiment, or reasoning as confirming or infirming a hypothesis depending on whether your probability for it increases or decreases during the episode."