在す

also 御座す

1. su verb - precursor to the modern suru, intransitive, honorific, archaic to be
2. honorific, archaic to go; to come

まします also 坐す

1. godan verb, intransitive, honorific to be

います · ます also 坐す

1. Yodan verb with 'su' ending (archaic), intransitive, honorific, archaic to be
2. honorific, archaic to go; to come