To suspect, to imagine or suppose (something) to be the case.
To be suspicious.
To have no confidence in (something or someone).
To be wary, suspicious or doubtful of (something or someone).
Lack of trust or confidence; distrust, untrust.
To assume or suggest to be true (without proof); to take for granted, to suppose.
To be presumptuous; with on, upon, to take advantage (of), to take liberties (with).
To take as a premise; to assume for the sake of argument.
With infinitive object: to be so presumptuous as (to do something) without proper authority or permission.