Definition from Wiktionary, the free dictionary
- Rhymes: -ɜː(r)m
- Weak or ill, not in good health.
- 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.
- insecure; irresolute
- frail; unstable
- To contradict, to provide proof that something is not.
- 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.