Goidelic substrate hypothesis
The Goidelic substrate hypothesis refers to the hypothesized language or languages spoken in Ireland before the arrival of the Goidelic languages.
Hypothesis of non-Indo-European languages
, like the rest of northern Europe, after the retreat of the ice sheets c. 10,500 BC. Indo-European languages are usually thought to have been a much later arrival. Some scholars hypothesize that the Goidelic languages may have been brought by the Bell Beaker culture circa 2500 BC. This dating is supported by DNA analysis indicating large-scale Indo-European migration to Britain about that time. In contrast, other scholars argue for a much later date of arrival of Goidelic languages to Ireland based on linguistic evidence. Peter Schrijver has suggested that Irish was perhaps preceded by an earlier wave of Celtic-speaking colonists who were displaced by a later wave of proto-Irish speakers only in the 1st century AD, following a migration in the wake of the Roman conquest of Britain, with Irish and British Celtic languages only branching off from a common Insular Celtic language around that time.Scholars have suggested:
- that an older language or languages could have been replaced by the Insular Celtic languages; and
- that words and grammatical constructs from the original language, or languages, may nevertheless persist as a substrate in the Celtic languages, especially in placenames and personal names.
Suggested non-Indo-European words in Irish
- bréife 'ring, loop'
- cuifre/''cuipre 'kindness',
- fafall/fubhal, One of the hazel trees at the well of Segais
- lufe 'feminine',
- slife 'broadening'
- strophais 'straw';
- Bréifne
- Crufait
- Dún Gaifi
- Faffand
- Grafand, an old name for Knockgraffon
- Grafrenn
- Life/Mag Liphi
- Máfat.
Peter Schrijver submits the following words as deriving from the substrate:
Ranko Matasović lists the following words
- Middle Irish ainder 'young woman', Middle Welsh anneir 'heifer', perhaps Gaulish