I was on a biddymirphy.com and they have a best friends pendant that has on one side "Buan Chara Go Deo" on the other the English translation "Best Friend Forever". I hope this helps.
In Irish it's mo dheirfiúr, mo chara
I am his friend
In Irish (Gaelic) it is "leathcheann". In (Scottish) Gaelic: ?
Mo chara, in Irish Gaelic. Mo charaid, in Scottish Gaelic and Connemara Irish
In Irish: do dheartháir In Scottish Gaelic: do bhràthair
"do chara"
In Irish it's "Do mo chara mór Breandán Pádraig"
In Irish Gaelic 'mo chara' means 'my friend'.
In Irish, "do chara cléibh". In Scottish Gaelic: ???
Cara means friend; a chara can mean 'his friend' or when addressing someone A chara, O friend. This is Irish Gaelic.
Irish: Go raibh maith agat, a chara. (Scottish) Gaelic: ?
Aingeal Éireannach / Aingeal Gaelach