infest /in-festˈ/

1. To swarm over, cover or fill, in a troublesome, unpleasant or harmful way
2. To invade and live on or in as a parasite
3. To disturb or harass

1. Hostile
2. Troublesome

infestāˈtion noun

1. Attack, or the condition of being attacked, esp by parasites
2. Molestation (obsolete)

• salerooms
• sales
• salesclerk
• salesclerks
• sales drive
• sales drives
• sales engineer
• sales engineers
• Salesian
• Salesians
• salesman
• stemwinder
• stemwinders
• sten
• Sten
• stench
• stenched
• stenches
• stenchier
• stenchiest
• stenching
• stench trap
• stench traps
• stenchy
• stencil