IPA: /ˈɪnfəmi/
KK: /ɪnˈfɛmi/
A state of being well-known for something bad or evil, often due to a shocking or criminal act.
The dictator's infamy was known worldwide after his brutal actions were revealed.
Infamy → It is formed from "in-" (meaning not) and "fama" (from Latin, meaning fame or reputation). The word "infamy" refers to a state of having a bad reputation or being notorious, thus meaning not having a good fame.
Think of 'not' ('in-') having a good 'reputation' ('fama') — that's why infamy means a bad reputation.
No commonly confused words.