Anuttara

unsurpassed, highest, anuttara; Anuttara, highest, unexcelled, unsurpassed, unsurpassable, ["highest" when substitute for Anuttara]. perfect, the upper-most [RY]

paramount [RY]

anuttara, highest, unexcelled, unsurpassed, unsurpassable [IW]

gzhang gang yang 'di bla na med pa not excelled by any other [RY]

having nothing higher over it, uppermost, very highest, unexcelled, paramount, supreme, supreme [JV]

unsurpassable [RB]