"She is not tired."

Terjemahan: Dia tidak capek.

[RechardusD]

Duolinggo, please use "lelah". Because "capek" is a slang word and not formal in Indonesia language.

[sourc7]

Dia tidak lelah

[paremansan]

Capek

[Harini77815]

Kenapa ditambah ed?

[DwikiFauzi]

Ya iya lah, klo tire doang mah artinya ban.

[HanifBustani]

not always 'lelah', but can use 'kelelahan'

[PERCE_NEIGE]

Kelelahan is not a noun? But here I am + adjective.

[rozenacht]

Lelah = capek

[Rick392366]

capai = not accepted

padahal sama menurut KBBI :

https://kbbi.web.id/capek