aberr
n. C2 Proficiency aberr
n. a strange or unusual mistake. This word is very old and you will only see it in very old books or poems.
n. a deviation from the normal or expected state; an error or mistake.
The old manuscript contains a small aberr.
The poet used the word 'aberr' to describe a single mistake in an otherwise perfect manuscript.
Scholars noted that the scribe's hand was generally flawless, yet a single aberr in the final line suggested a momentary lapse in concentration or a physical injury.
From Latin aberrō (“go astray; err”), from ab (“from, away from”) + errō (“stray”).