Rightward (to or from the right side); on the right side.
Clockwise, moving clockwise.
By a rightward path; rightwards, rightwardly; clockwise (in a clockwise manner).
Rightly (correctly or justly); rightfully.
Acceptable, proper or correct; in accordance with the rules.
Well grounded or justifiable, pertinent.
Of an argument: whose conclusion is always true whenever its premises are true.
Genuine - as distinguished from efficient or regular - sacrament.
Related to the current topic, or presented within context, relevant.
Of a formula or system: such that it evaluates to true regardless of the input values.