1. people or things that are ready to be used as substitutes or in emergencies
Usage: plural of standby
2. reliable or regularly used items, methods, or resources
Usage: plural of standby

Examples

• The theater keeps several standbys ready in case the lead actors get sick.
• Emergency generators serve as standbys when the main power fails.
• These recipes are my cooking standbys for busy weeknights.
• The airline had standbys waiting at the gate for last-minute seats.
• Backup servers act as standbys to prevent system downtime.
• Her wardrobe standbys include a black dress and comfortable flats.