ageing

• Acquiring desirable qualities by being left undisturbed for some time (synset 113573168)
  hypernym: biological process, organic process - a process occurring in living organisms
  hyponym: mellowing - the process of becoming mellow
  synonym: aging, ripening
• The organic process of growing older and showing the effects of increasing age (synset 113450179)
  hypernym: biological process, organic process - a process occurring in living organisms
  hyponym: catabiosis - normal aging of cells
  synonym: aging, senescence

• Growing old (synset 301649151)
  similar: old - (used especially of persons) having lived for a relatively long time or attained a specific age
  synonym: aging, senescent

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