Oldest
//ˈəʊldəst// adj, noun
adj, noun ·Uncommon ·Advanced level
Definitions
Noun
- 1 The oldest child in a family, or individual in a group.
"My oldest always forgets to turn the living room lights off before bed."
Adjective
- 1 superlative form of old: most old form-of, superlative
"An interesting feature of the church is the invisible clock, which you can hear thumping away as you enter. Constructed in 1525, it is one of the oldest timepieces in England. It chimes the hours and the quarters, and every three hours it plays a hymn. But it has no faces."
Example
More examples"It was not until last summer that my oldest son learned to swim."
More for "oldest"
Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.