longest
1. [ adverb ] for the most time
Examples:

"she stayed longest"

Related terms: long long
2. [ noun ] Last name, frequency rank in the U.S. is 26338
3. [ adjective ] having the greater length of two or the greatest length of several
Synonyms: longer
Examples:

"the longer (or long) edge of the door" "the hypotenuse is the longest (or long) side of a right triangle"

Related terms: long
Similar spelling:   longish
  longwise
  longways
  Longacre
  long_whist