puith (no distinct plural)
having sex, coitus
With singular and plural “the”, showing Soft and Nasal mutations:
i buith “the coitus”
i phuith “the coiti”
based on Early Noldorin hoith 'coitus' and Qenya pukta 'coitus' (PE13:147)
iuith 'use' (Ety400)
Fiona Jallings, a.k.a. 'dreamingfifi' Merin Essi ar Quenteli! - Wordlists - Reconstructed Sindarin