horse-hoarse merger

Among the changes, which took place in Dublin English in the 1990s (Hickey 1999), are the following four which are also found in general forms of American English: (a) use of retroflex /r/, in fork [fo:ɻk]; (b) use of an intervocalic alveolar tap, for example in water [wɑɾɚ]; (c) the horse/hoarse‐merger and (d) the which/witch‐merger.