Quenya 

ta mára

so good

tambë

so

tambë prep. (1) "so" or "as" (referring to something remote; contrast sívë). Sívë...tambë "as...so" (VT43:17).

ta

so, like that, also

ta (2) adv. "so, like that, also", e.g. ta mára "so good" (VT49:12)

ter

so

ter (2), also tér, prep. (?) ephemeral word for "so" (see ier), abandoned by Tolkien in favour of tambë (VT43:17)

san

so

san (2) adv. ephemeral word for "so" (ya(n)...san "as...so"; san na "thus be" = let it be so, "amen"); this form was apparently quickly abandoned by Tolkien (VT43:16, 24, VT49.18)