foothills
n. plural-only B2 Upper Intermediate US //ˈfʊtˌhɪɫz// UK //fˈʊthɪlz// foothills
n. the lower hills at the base of a mountain or a mountain range. They are usually the first hills you climb before reaching the higher peaks.
n. low hills situated at the base of a mountain range, serving as a transitional zone between plains and higher elevations.
We spent the afternoon hiking through the green foothills.
The small village is nestled in the foothills, offering residents a cooler climate than the valley below without the harsh mountain winters.
The expedition established a base camp in the foothills to allow the climbers to acclimatise before they attempted the more oxygen-depleted altitudes of the main massif.
Usage
Almost exclusively used in the plural form; takes plural verb agreement.