geamikoj

ge- (“both sexes (or: of any sex)”) +‎ amikoj (“friends”)

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• IPA^(key): [ɡeaˈmikoj]
• Rhymes: -ikoj
• Hyphenation: ge‧a‧mi‧koj

geamikoj (accusative geamikojn)

1. (plural only, dated) friends, including both female(s) and male(s)
   • 1906 July, “Kroniko”, in The British Esperantist, volume 2, number 19, page 75:

     En la somero ni esperas babiladi kun niaj Manĉestraj geamikoj ĉe ekskursoj.

     In the summer we waited to chat with our Manchester friends on the trips.

Dated construction by writers who understood amiko as a masculine noun. Since amiko is gender-neutral now, the ge- prefix is superfluous, unless one wishes to emphasize that a group of friends includes both females and males.