melioration

Từ điển WordNet v3.1 - WordNet Dictionary

noun

1. the act of relieving ills and changing for the better (Freq. 1)
• Syn:
amelioration, betterment
• Derivationally related forms:
better (for: betterment), meliorate, ameliorate (for: amelioration)
• Hypernyms:
improvement
2. a condition superior to an earlier condition
- the new school represents a great improvement
• Syn:
improvement
• Ant:
decline (for: improvement)
• Derivationally related forms:
meliorate, improve (for: improvement)
• Hypernyms:
condition, status
• Hyponyms:
betterment, development, reformation, renovation, restoration, refurbishment
3. the linguistic process in which over a period of time a word grows more positive in connotation or more elevated in meaning
• Derivationally related forms:
meliorate
• Hypernyms:
drift

• Từ đồng nghĩa / Synonyms:
  improvement, amelioration, betterment
• Từ trái nghĩa / Antonyms:
  decline, declination