from Edward Bunting, The Ancient Music of Ireland (Dublin 1840), page 22: The strings of the harp.
Irish dofhreagradh
spoken by Gráinne Yeats
Scottish Gaelic freagairt
spoken by Tony Dilworth
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Dofhreagrach - Answering
As in Dofhreagrach caomhluidhe, the Gaelic word is clearly a noun (perhaps dofhreagradh) which is not attested elsewhere. On p.32 Dofhreagreach is explained as 'Answering, an octave'.
Colm Ó Baoill 2002
Alasdair Codona suggests that ‘dofhreagrach‘ might be a mis-reading of ‘Do. fhreagrach’, i.e. ditto fhreagrach, in a manuscript list of similar terms. This suggestion is supported by the absence of Dofhreagrach in the ms12 chart: it gives ‘freagrach’ as the name of the high d string, though it could also be indicating that all the treble strings are called this name.
Simon Chadwick 2008