Cluster simplification

Stops after fricatives or sonorants are liable to deletion. Intermediate registers may have a glottal stop as a trace of the stop in question: pound , last .

Fortition of dental fricatives:

It is safe to assume that the realization of the first sound in the THOUGHT lexical set in popular Dublin English as an alveolar plosive [t] is not a recent phenomenon. Hogan (1927: 71–72) notes that it is found in the seventeenth century plays (assuming that t, d represent [t, d]) and furthermore in the Dublin City Records, where the third person singular ending -th appears as -t.