ANT: Believer.

=

KEY: Scepticism.

SYN: Doubt, unbelief, infidelity, incredulity.

ANT: Faith, belief, credulity.

=

KEY: Scheme.

SYN: Plan, project, design, contrivance, purpose, draft, proposal, device, plot, theory, intrigue, machination.

ANT: Miscontrivance, bungle, misarrangement, blunder.

=