🇮🇪 The best dictionaries for learning Irish

The single most useful Irish site there is: Ó Dónaill's dictionary, complete grammatical inflection for every word, and recordings of each headword by speakers from Ulster, Connacht and Munster. Those three recordings matter more in Irish than in most languages — the dialects differ enough that learners routinely fail to recognise a word they know. Free, from Foras na Gaeilge.

Purpose-built for people writing Irish rather than reading it, with generous example sentences showing which of several translations you actually want. Complements Teanglann, which is stronger going the other way. Also free from Foras na Gaeilge.

Over 100 language editions; the English edition alone has millions of entries covering hundreds of languages, with IPA, declension and conjugation tables, etymologies and usage notes that commercial apps usually paywall. The etymology sections are quietly one of the best vocabulary-retention tools available. Being crowd-sourced, coverage is uneven and rare entries can be wrong — cross-check anything unusual against a native-language dictionary.

Around 6 million words recorded by native speakers across 400+ languages, usually with several accents per word so you can hear regional variation. Free to search on the site; the paid tiers are aimed at API users and bulk audio downloads. Indispensable for names, place names and anything a TTS voice would mangle — many learners wire it directly into Anki for card audio.