1. most inclined to pry into or search through others’ private affairs; most nosy
Usage: superlative form of snoopy

Examples

• She’s the snoopiest neighbor on the block, always peering through her curtains.
• My little brother is the snoopiest kid I know—he goes through everyone’s stuff.
• The snoopiest reporter at the newspaper always gets the best stories.
• Of all my coworkers, Janet is the snoopiest about personal matters.
• He became even snoopier after the promotion, making him the snoopiest manager in the company.
• The snoopiest students were caught reading other people’s emails.