hilfreich (bn):
behulpzaam(en) furnishing help; giving aid; useful., doelmatig(en) suitable to effect some desired end or the purpose intended., eenvoudig(en) suitable to effect some desired end or the purpose intended., snel(en) suitable to effect some desired end or the purpose intended., uitgekookt(en) suitable to effect some desired end or the purpose intended.
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Via: Memodata.com