adjective
longest
LONG-guhst
adjective
1
The superlative form of "long"; extending the furthest in distance or time of all being compared.
"The Nile is often cited as the longest river in the world."
"That was the longest day of my life."
How to Use Longest
Learner’s notesIn plain EnglishThe most long — used when comparing three or more things.
Common pairings
the longest day
longest river
by far the longest
Word Forms
longests plural, Longests plural
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The Nile is often cited as the _____ river in the world.