In a manner that is long in time or duration.

लंबे समय तक

English Usage: The meeting went on lengthily, causing everyone to lose focus.

Hindi Usage: बैठक लंबे समय तक चली, जिससे सभी की ध्यान भंग हो गया।

The measurement of something from end to end.

लंबाई

English Usage: The length of the room is ten feet.

Hindi Usage: कमरे की लंबाई दस फीट है।

Of considerable distance or duration.

लंबा

English Usage: The lengthy report was difficult to read.

Hindi Usage: लंबी रिपोर्ट पढ़ना मुश्किल था।