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n.1.A disdainful manner.
References in periodicals archive ?
You can see the consumer values in our cavalierness toward the marriage commitment.
He's responsible for so much of the cavalierness in my music.
The cavalierness with which this clause was invoked is underscored by the fact that laws affecting the validity of marriage lie within the jurisdiction of the federal parliament and not that of the provincial legislatures and thus any attempt to outlaw same sex marriage is beyond the jurisdiction of the province of Alberta and invalid for that reason.