Answer: idigress

AnswerCrossword Clue
IDIGRESS

Acknowledgement of a deviation, usually after "but"

IDIGRESS

Words from someone who's gone off on a tangent

IDIGRESS

"Excuse me for going off-topic"

IDIGRESS
"There was a point here somewhere"
IDIGRESS
Off-topic remark?
IDIGRESSAdmission of a tangent