The words kuṇḍapāyyaḥ and saṃcāyyaḥ are irregularly formed meaning 'a sacrifice'.,
These words are thus formed: कुण्ड + पा (to drink) + यत् = कुण्ड + पा + य + य 7.3.33 = कुण्डपाय्यः 'the sacrifice in which Soma is drunk with a bowl'. The accent falls on the first syllable by (VI. I. 213). सम् + चि (to collect) + ण्यत् = सञ्चाय्यः 'the sacrifice in which Soma is collected'.
If not applied to sacrifices, the forms will be कुण्डपानम् and सञ्चेयः.,