RichThesaurus
highlands
highlands
synonyms
hills
mountains
ridge
and the first part pluralized: the Rocky Mountains can be called the Rockies.
mountainous region
plateau
sierra
mountain range
highland
hilly country
in informal usage that part is often omitted entirely
upland
cordillera
mountain chain
heights
elevated plain
wolds
mesa
uplands
tableland
Note: Names of mountain ranges often simply use the plural of a name for an individual mountain: alps
range
etc. See Thesaurus:mountain. Also
moors
spread
eminence
swell
acreage
promontory
hill
terrain
bench
peninsula
high point
ranch
mountain
brow
head
outcrop
sweep
height
crown
ascent
green
territory
reach
zenith
expanse
track
mound
more synonyms
highlands
antonyms
lowland