bâcler (ww):
verprutsen(en) to do something without skill, without care, or clumsily.
(en) to perform (a task) in an unacceptable or incompetent manner., ineenflansen(en) to make or construct something in haste., snel afhaspelen(en) to complete hastily., snel afmaken(en) to complete hastily., volproppen(en) to make crude preparation for a special occasion.
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Via: Memodata.com