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Definition of At length
1. Adverb. In a lengthy or prolix manner. "She talked at length about the problem" 
Definition of At length
1. Adverb. For a long time. ¹
2. Adverb. (formal or dated) At last, finally. ¹
¹ Source: wiktionary.com
|  | 
1. Adverb. In a lengthy or prolix manner. "She talked at length about the problem" 
1. Adverb. For a long time. ¹
2. Adverb. (formal or dated) At last, finally. ¹
¹ Source: wiktionary.com