Meaning of Idiom ‘At Length’
At length means in full detail, for a long time.
The idiom is used in regards to speaking or writing about a subject.

Sentence Examples
“The CEO talked at length about the company’s ideology but managed to say nothing about its prospects.”
“We have discussed the proposal at length but we are no closer to making a decision.”
“Let me call you back — I’ll call you when we can talk at length.” — City Hall (1996)
“Do you feel up to answering a few questions?” “I’ve talked at length with my daughter, but she and my grandson need time.” — Jesse Stone: Benefit of the Doubt (2012)
Origin
Used since the 1500s.
More Idioms Starting with A
More At Idioms
More Length Idioms
