User:Mellohi!/Old Irish terms with œ

There are several words in Old Irish whose first vowel tends to vascillate between the spellings au, ai, e, i, and u. This initial vowel has been hypothesized to be /œ/ or /æ/ and arose from the u-infection of a of a u that came before a palatalized consonant, in addition to appearing where the prefix ar- is followed by fo- (with fo- being lost).

Suspected words

u-infection by palatal-contact u

• Crimthann (“male given name”)
• Inflections of tulach (“hill”)
• epaid (“charm, spell”)
  • Irish: upa
  • Scottish Gaelic: ubag
  • Manx: obbee

ar- +‎ fo- derivatives

• do·aurchain (“to prophesy”)
• do·aurling (“to dismount”)
  • Irish: tuirling
  • Scottish Gaelic: tùirling
• irlam (“ready”)

ad- +‎ uss- derivatives

• Verbal noun edbart and various prototonic forms of ad·opair (“to offer”)
  • Irish: íobair
  • Scottish Gaelic: ìobair

ar- and labialized adjacent vowels

Before a velar

• auraicept, uraicecht (“primer”)
• erchót and prototonic forms of ar·coat
• airchur and prototonic forms of ar·cuirethar

Before a labial

• irbág and prototonic forms of ar·báigi
  • Irish: urbhágh
• ar·biatha in prototonic forms