Bremmer, Rolf H. (2009),An Introduction to Old Frisian: History, Grammar, Reader, Glossary, Amsterdam: John Benjamins Publishing Company,→ISBN, page214
thu is used to address one person in a familiar or informal situation. It is used between friends, and to people who are younger or of inferior social rank to the speaker.
Children are always addressed usingthu.
It is considered distinctly impolite to address parents, grandparents, teachers, clergymen, etc. withthu, in these situationssibh is required.
1 Used when following a verb ending in-n,-s or-dh. 2sibh andsibhse also act as the polite singular pronouns. To mark a direct object of a verbal noun, the derivatives ofgam are used.
^Oftedal, M. (1956),A linguistic survey of the Gaelic dialects of Scotland, Vol. III: The Gaelic of Leurbost, Isle of Lewis, Oslo: Norsk Tidsskrift for Sprogvidenskap
^John MacPherson (1945) The Gaelic dialect of North Uist (Thesis)[1], Edinburgh: University of Edinburgh
^Borgstrøm, Carl Hj. (1937),The dialect of Barra in the Outer Hebrides, Oslo: Norsk Tidsskrift for Sprogvidenskap
^Wentworth, Roy (2003),Gaelic Words and Phrases From Wester Ross / Faclan is Abairtean à Ros an Iar, Inverness: CLÀR,→ISBN
^Mac Gill-Fhinnein, Gordon (1966),Gàidhlig Uidhist a Deas, Dublin: Institiúid Ard-Léinn Bhaile Átha Cliath