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German
verschwenderisch
Close — wasteful, lavish relates to inefficient (inefficace).
Practice
1 What does inefficace mean?
inefficient
2 Fill the gap: Ce système est ___.
Full sentence: Ce système est inefficace. (This system is inefficient.)
3 Which fingerprint chart matches inefficace?
inefficace: neutral register, common frequency, general domain, neutral connotation.