infamous

The word "infamous" presents a fascinating semantic evolution. It originates from the Latin infamis, which itself is a compound of the negative prefix in- ("not") and fama ("report, reputation, fame"). Literally, it meant "of ill repute." The logic of the word's formation is direct: the prefix negates the positive quality of being famous, resulting in a state of being known for negative reasons. Over time, the meaning intensified from simply "not famous" or "obscure" to specifically and actively "notorious," emphasizing the nature of the reputation rather than its absence. This shift illustrates how language can specialize a compound's meaning, moving from a literal negation to a distinct concept with its own moral weight.

Structure: in (not) + famous (well-known) - in: Latin origin, a prefix meaning "not" or "without". - famous: From Latin famosus, meaning "renowned" or "well-known".