All 6 Uses

reprove
in
Outlander
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A few idlers passing by paused to jeer at the victim and throw balls of mud, and now and then a more sober citizen was to be seen, seizing a moment from the round of daily duties to attend to the moral improvement of the delinquent by means of a few well-chosen words of reproval and advice.†
p. 125.4

reproval = criticism
He shook his head reprovingly at the boy.†
p. 127.7 *

reprovingly = in a critical manner
"Ye should really be armed yourself, m'dear," he said in a tone of mild reproof.†
p. 151.1

reproof = criticism
"Some of us dinna spend our day idlin' about the grassy banks, lad," he said reprovingly, rolling his eyes lewdly at me.†
p. 227.6

reprovingly = in a critical manner
"Tsk," I said, reprovingly.†
p. 275.2
"You are supposed to be resting," I said reprovingly, at one point.†
p. 340.3

Definitions:

(1) (reprove)
express disapproval or criticism -- typically in a mild manner & sometimes even in a friendly manner
(2) (meaning too rare to warrant focus)
More rarely (though often from Shakespeare), the form reproof describes punishment rather than merely criticism.