Synonyms for Savanna:

n.

flat grassland (noun)
plain, savannah.
location (noun)
savannah.
prairie (noun)
flatness, mesa, heath, desert, champaign, steppe, plateau, tundra, countryside, pampas, moor, plain, prairie, veld.
savanna (noun)
savannah.

Other synonyms:

Other relevant words:
savannah.