Celtic Languages

Brythonic

Breton Dictionaries

• Breton-German Online Dictionary

Welsh Dictionaries

• Welsh Meta-Dictionary (inflected forms)
• Welsh-English Lexicon
• Welsh-Frisian Dictionary (text file)
• Welsh-English Dictionary
• Welsh-German Online Dictionary
• Welsh Spell-Checker

Goidelic

Irish Dictionaries

• An Foclóir Beag
• Gramadach Lexicon (with full inflections of all words)
• Gaelic Dictionaries Online [Search]
• Téarmaí Ríomhaireachta (Computer Terms)
• An Tobar Useful Phrases
• Index of Gaelic Online Dictionaries and Glossaries
• Old Irish Glossary

Scottish Dictionaries

• Faclair Searchable
• MacFarlane's Gaelic-English
• MacBain's Gaelic Etymological Dictionary
• An Stòrdàta Briathrachais Gàidhlig
• Gaelic-English Dictionary (Word document)
• Thesaurus Gàidhlig
• Dearbhadh litreachaidh sa Ghàidhlig (Gaelic spell-check)
• A Dictionary of Gaelic Words and Phrases from Wester Ross (670 pp. Word document)

Manx Dictionaries