how do i say brotherhood in gaelic..

I'm not sure you can. I couldn't get a decent response on the Irish Translator or Focloir Beag.

I think it's an english word that doesn't have a direct translation in Irish.

I could be wrong, however. Let someone more versed than I give you some better guidance.

bannaí bráithriúil ???

Fraternal Bond...???

bannaí bráithriúil ???

Fraternal Bond...brotherly bond...???

I think brotherhood is Bráithreachas.

Sin é go deimhin:

bráithreachas [ainmfhocal firinscneach den chéad díochlaonadh]
comhghaol, comhbhá idir lucht aon cheirde nó cumainn.

Is focal deas é 'dáimh' nár cheart dúinn a fhágáil ag an Ultach amháin.

Bíonn 'dáimh' ag an Ultach le dream daoine nó le háit chomh maith:
Tá dáimh iontach acu lena chéile.
Tá dáimh iontach ag an dream sin lena chéile.

'Gaol na gcnámh' a bheadh ag duine le háit a déarfadh roinnt againn chomh maith le sin.

Comhaltas is an alternative in my Folcóir Póca.

Is one better than the other?

look at www.focail.ie

quote:

Comhaltas is an alternative in my Folcóir Póca.

Usually means "association". Seo agat an stair taobh thiar den fhocal:

comhaltas < comhalta = 1. foster-brother/sister. 2. member of a society; fellow of a university

comhalta < comh + dhalta :

comh = mutual, common, joint

dalta = 1. foster-child. 2. pupil, student

The close semantic connection between "fosterling" and "student" goes back to the days when parents routinely sent their children, at around age seven, to be fostered by family allies. The foster-parents were responsible for bringing up the young people to behave properly, and for teaching them the skills and accomplishments appropriate to their station in life.