In any migratory context individuals are faced with several challenges as a result of having to live in a different geographical location, function in a different cultural setting and use a different language. The migrants’ use of language plays a crucial role in mediation of their identity, especially in the domain of pronunciation (Kobialka 2016). When non-native users of language adapt their speech to resemble that of the host community, it may suggest their strong identification with the target community (Hammer and Dewaele 2015). This papers focuses on the pronunciation patterns among Polish adult migrants living in the west of Ireland. The aim of the study is to investigate the link between positive attitudes of the migrant community towards Ireland, Irish culture and community, their acculturation strategies and language identity, and the tendency to use one of the most characteristic features of Irish English – slit-t. The theoretical framework includes acculturation theory (Berry 2005), social identity theory (Tajfel and turner 1987) and language identity (Block 2007). The qualitative and quantitative analysis of data indicates a certain correlation between the use of Irish English slit-t and the participants’ strategies of acculturation, identity and attitudes to the host community.