First thing that comes to your mind.

[VaudevillianVeteran]

Depression.

 

[Best of the 3]

Sadness.

 

[VaudevillianVeteran]

Perk up.

 

[Best of the 3]

Chipper.

 

[VaudevillianVeteran]

Wood chipper.

 

[Best of the 3]

Dead body.

 

[VaudevillianVeteran]

Bury.

 

[Zirat]

Shovel

 

[Best of the 3]

Grave digging.

 

[VaudevillianVeteran]

Dirt.

 

[Best of the 3]

Mud.

 

[Scde2]

Muck.

 

[Best of the 3]

Farms.

 

[BoosterGold]

Farmville

 

[Scde2]

Virus.

 

[Best of the 3]

Pests.

 

[Scde2]

Rats.

 

[Zirat]

Vaccine

 

[Best of the 3]

Immunity.

 

[Dango]

Community.