the.com/conspirator
A schemer who insists their secret plan needs at least one accomplice.
means A person who secretly works with others to plan something illegal, harmful, or deceitful.
from From Latin conspirare, literally to breathe together — plotters once huddled close enough to share air.
Solo disqualifiedOne person plotting alone is just a planner.
Breath linkShares roots with respire and inspire.
Legal weightConspiracy is a crime even without the act.