Scottish Gaelic bràthair

← Proto-Celtic *brātīr (inherited)

← Proto-Indo-European *bʰréh₂tēr (inherited)

← Old Irish bráthair (inherited)

→ Scottish Gaelic leas-bhràthair (prefix)

→ Scottish Gaelic nighean-bhràthar (affix)

→ Scottish Gaelic nighean-bràthar (affix)

→ Scottish Gaelic mac-bràthar (affix)

→ Scottish Gaelic leth-bhràthair (prefix)

→ Scottish Gaelic comh-bhràthaireil (affix)

→ Scottish Gaelic bràithreil (affix)