isik, kelle tahteavaldust sisaldavat tehingut või teise isiku nimel esitatud tahteavaldust sisaldavat tehingut tõestatakse
a person who takes part in a legal transaction or proceeding is said to be a party to it. Thus, if an agreement, conveyance, lease, or the like, is entered between A and B, they are said to be parties to it;... (Jowitt, 2nd ed. 1977, p. 1321).