Emily Dickinson Lexicon

IN'FA-MOUS, a. [Fr. infame; L. infamis; infamo, to defame; in and fama, fame.]

1. Of ill report, emphatically; having a reputation of the worst kind; publicly branded with odium for vice or guilt; base; scandalous; notoriously vile; used of persons; as an infamous liar; an infamous rake or gambler.
2. Odious; detestable; held in abhorrence; that renders a person infamous; as, an infamous vice.
3. Branded with infamy by conviction of a crime. An infamous person can not be a witness.