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Etymology 1
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Verb

 * 1) to dull, to blunt

Derived terms
imperfective perfective
 * (no equivalent)
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Verb

 * 1)  to lower (one's eyes, gaze, etc.) so as not to look at someone

Derived terms
imperfective perfective

Verb

 * 1)  to make a stupid mistake, to screw up, to mess up, to have a brain fart