Front

lag

Back

fall behind in movement, progress, or development; not keep pace with another or others

Front

terrain

Back

a stretch of land, especially with regard to its physical features

Front

scrub

Back

a plant community characterized by vegetation dominated by shrubs

Front

Jur-chol Tribe

Back

a Nilotic ethnic group that live in the western parts of South Sudan

Front

sluggishly

Back

moving or operating more slowly than usual and with less energy