exasperate

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exasperate

Botany having a rough prickly surface because of the presence of hard projecting points

exasperate

[ig′zas·pə·rət]
(biology)
Having a surface roughened by stiff elevations or bristles.
References in classic literature ?
It has kept him in a state of smothered exasperation all the time.
The last thing he heard, just before the end of the summer session, was that Griffiths, urbanity had given way at length under the exasperation of the constant persecution.
shouted Rostov, looking at him in an ecstasy of exasperation.