Adjective: Not giving up or stopping

Verb: To support life; to survive

Verb: To be in charge; govern

Adjective: Left over; remaining

Noun: One who disagrees or argues

Noun: One that serves or is secondary to another

Adjective: Spreading harmfully and secretly

Adjective: Determined and Constant

Verb: To make useless; to replace

Adjective: Not very active; often in a seated position