su·preme 
(s-prēm)
(s-prēm)adj.
1. Greatest in power, authority, or rank; paramount or dominant.
2. Greatest in importance, degree, significance, character, or achievement.
3. Ultimate; final: the supreme sacrifice.
[Latin suprēmus, superlative of superus, upper, from super, over; see uper in the Appendix of Indo-European roots.]
su·premely adv.
su·premeness n.