lengthiest
Taking most time
Lengthiest is the superlative form of lengthy—the most extended in duration or extent.
Where longest emphasizes physical measurement, lengthiest often carries a hint of excess or tedium: the lengthiest speech of the evening, the lengthiest chapter in the book.
It suggests something that went on perhaps longer than it needed to.
duration
Greatest in extent
- protractedExtended beyond normal duration
- drawn-outExtended beyond normal duration
- prolongedMade to last longer
- extendedLengthened in time or space
sustained · interminable · marathon · endless · perpetual · everlasting · lasting · enduring
longest
Greatest in extent
- protractedExtended beyond normal duration
- drawn-outExtended beyond normal duration
- prolongedMade to last longer
extended · sustained · interminable · marathon · endless · perpetual · everlasting · lasting · enduring · continued