The state of being serene; calmness; peacefulness. / A lack of agitation or disturbance. / A title given to a reigning prince or similar dignitary.

Synonym of program evaluation and review technique

Third-person singular simple present indicative form of unsign

(of a statement) Conforming to the actual state of reality or fact; factually correct. / As an ellipsis of (while) it is true (that), used to start a sentence