Encore

n.joyful, energeticeveryday

What it means

An additional performance given after an appreciative audience asks for more.

Reach for it when naming the extra performance earned by sustained applause

The quartet returned for an encore and played the village song.

playful
bonus number
when an informal music context suits the surprise
not when Bonus number is commercial-sounding and applies poorly to drama or dance.
everyday
extra performance
when direct explanation is clearer than the theater term
not when An extra performance may be scheduled in advance rather than requested after a show.
everyday
repeat
when the audience wants the same piece again
not when An encore often features a different piece, so repeat can be factually wrong.
warm
one more song
when a concert audience's request should sound immediate
not when The phrase is limited to music and lacks encore's established stage meaning.
professional
curtain call
when performers return to receive applause
not when A curtain call involves acknowledgment, not necessarily another performance.
professional
reprise
when earlier musical material returns within or after a work
not when A reprise is a structural repetition and need not answer audience applause.

perform an encore
The violinist chose to perform an encore by a local composer.
return for an encore
The cast returned for an encore after several minutes of applause.
encore performance
The encore performance was quieter than the triumphant finale.

The definition and the example on this page are written here. The dictionaries above ground which meaning is being described, not the wording.