The Greek term that is usually translated as “apostle(s)” in English is (back-) translated in the following ways:

• Eastern Highland Otomi, Tzeltal, Western Kanjobal, Western Highland Purepecha, Navajo, Copainalá Zoque, Chol, Balanta-Kentohe, English (original meaning of “apostle”): “the sent ones”
• Kituba, Pamona, Mezquital Otomi, Central Pame: “messengers”
• Ngäbere: “word carriers”
• Southern Subanen: “those commanded to carry the message”
• San Blas Kuna: “witnesses to God” (meaning “those who speak up and out for God” (source for this and all above: Bratcher / Nida, except Balanta-Kentohe: Rob Koops)
• Mairasi: sasiri atatuemnev nesovnaa or “sent witnesses” (source: Enggavoter 2004)
• Ekari: “one-who-goes-and-tells-for-someone” (source: Reiling / Swellengrebel)
• Khmer: Christtout (“messenger representing Christ”) or when Jesus addresses them: Tout robas Preah Ang (“his messengers-representatives”) (source: Joseph Hong in The Bible Translator 1996, p. 233ff.)
• Pwo Karen: “eyeballs” (i.e., “right-hand men”) (source: David Clark)
• Tzeltal, Coatlán Mixe: “spreader-of-words”
• Chicahuaxtla Triqui: “one who goes about preaching the good word” (source for this and above: Waterhouse / Parrott in Notes on Translation October 1967, p. 1ff.)
• Noongar: Moorta Ngany Waangki-Koorl or “People I (Jesus) Send” (source: Warda-Kwabba Luke-Ang)
• Ayutla Mixtec: “those who bore the word of God’s mouth”
• Chichimeca-Jonaz: “elders messengers” (source for this and above: Viola Waterhouse in Notes on Translation August 1966, p. 86ff.)

Scot McKnight (in The Second Testament, publ. 2023) translates it into English as commissioner.

In American Sign Language it is translated with a combination of the signs for “following” plus the sign for “authority” to differentiate it from disciple. (Source: RuthAnna Spooner, Ron Lawer)

“apostles” in American Sign Language, source: Deaf Harbor