1. superlative form of fit; most physically healthy, strong, or in good condition
2. most suitable or appropriate for a particular purpose or situation
3. referring to those best adapted to survive in natural selection
Usage: biology; often in the phrase ‘survival of the fittest’

Examples

• Only the fittest athletes made it to the Olympic team.
• She was considered the fittest candidate for the leadership position.
• The gym trainer was among the fittest people I had ever met.
• Darwin’s theory explains how the fittest species survive over time.
• In nature, survival of the fittest determines which animals thrive.
• The fittest applicant will be selected for the demanding job.
• He trained daily to become the fittest runner in his age group.