tētahi
1. (determiner) one, a, an, a certain, particular - often followed by a noun but can stand without one.
I rongo rātau i tētahi iwi e kōrerorero ana i roto o te kohu o te maunga. / They heard some people talking from within the mist on the mountain.
See also tētehi
2. (interjection) what a ...
(Te Kākano Textbook (Ed. 2): 58;)
3. (determiner) one another - when repeated with a preposition in between.
Kāore rātou i whana atu i te pōro mai i tētahi ki tētahi. / They didn't kick the ball from one to another.
4. moreover, besides, another thing was - used as a conjunction.
Tētahi, ko ngā kākahu o Weriweri he karukaru. / Moreover Weriweri's clothes were ragged.
Ko tētahi he kōpua rawa taua wāhi e kaukau rā rātau (HP 1991:20). / Another thing was that that place where they were swimming was a deep pool.
