verpatzen (ww):
verknoeien(de) —.
(en) to incompetently perform (a task); to ruin (something) through incompetent action., verprutsen(de) —.
(en) to perform (a task) in an unacceptable or incompetent manner., zich verspreken(en) to make a mistake in one’s lines.
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Via: Memodata.com