fios

From Old Irish fis, fius,^[1] from Proto-Celtic *wissus, from Proto-Indo-European *wéydtus, which is derived from *weyd- (“know, see”).

• (Munster, Ulster) IPA^(key): /fʲɨ̞sˠ/^[2]
• (Connacht) IPA^(key): /fʲɪsˠ/^[3]

fios m (genitive singular feasa)

1. knowledge, information

   Synonyms: eolas, tuiscint

   cá bhfios duit? ― how do you know?

   ar feadh a bhfuil dá fhios againn ― for all we know

   ag Dia atá a fhios ― God only knows

   fios ciontach ― guilty knowledge

   Eochair feasa foghlaim. (proverb) ― Learning is the key to knowledge.

2. carnal knowledge
3. occult knowledge

   fios a dhéanamh do dhuine ― to tell someone his fortune

• Dinneen, Patrick S. (1904) “fios”, in Foclóir Gaeḋilge agus Béarla, 1st edition, Dublin: Irish Texts Society, page 317
• Ó Dónaill, Niall (1977) “fios”, in Foclóir Gaeilge–Béarla, Dublin: An Gúm, →ISBN

fios

1. plural of fio

• fhios

From Old Irish fis, fius, from Proto-Celtic *wissus, from Proto-Indo-European *wéydtus, which is derived from *weyd- (“know, see”).

• ADH: /fĭs/
• IPA^(key): /fis̪/

fios m (genitive singular fiosa, plural fiosan)

1. knowledge

   Synonym: aithne

   Chan eil fios agam. ― I don't know. (literally, “Knowledge is not at me.”)

2. indication, information, message, notice, notification, news

• Edward Dwelly (1911) “fios”, in Faclair Gàidhlig gu Beurla le Dealbhan [The Illustrated Gaelic–English Dictionary]‎^[1], 10th edition, Edinburgh: Birlinn Limited, →ISBN
• Gregory Toner, Sharon Arbuthnot, Máire Ní Mhaonaigh, Marie-Luise Theuerkauf, Dagmar Wodtko, editors (2019), “fis, fius”, in eDIL: Electronic Dictionary of the Irish Language