Modifiers matching bug:

• little,
• microscopic,
• undesirable,
• bad,
• large,
• nasty,
• beneficial,
• tiny,
• harmful,
• biting,
• aquatic,
• small,
• minute,
• typical,
• pesky,
• nocturnal,
• predatory,
• friendly,
• destructive,
• irritating,
• new,
• fixed,
• larger,
• contagious,
• harmless,
• adult,
• damaging,
• airborne,
• cute,
• smaller,
• colorful,
• fast,
• deadly,
• intestinal,
• flying,
• moving,
• common,
• social,
• bigger,

Simple categories matching nasty:

• thing,
• component,
• contaminant,
• virus,
• stuff,
• bug,
• chemical,
• disease,
• pathogen,
• std,
• illness,
• material,
• animal,
• preservative,
• creature,
• disorder,
• predator,
• microbe,
• pest,
• item,
• allergen,
• emotion,
• weather,
• software,
• germ,
• vice,
• cause,
• happening,
• weapon,
• critter,
• program,
• insect,
• sickness,
• substance,
• content,
• infection,
• parasite,
• compound,
• beast,
• bacteria,
• condition,