WordNet: declension, decline in quality, deterioration, worsening

process of changing to an inferior state

• hypernym decline, diminution

• hyponym drop-off, falling off, falloff, slack, slump

declension

• (englanti) decline (derivationally related)
• (suomi) rappio (synonyymi)

decline in quality

• (suomi) laadun aleneminen (synonyymi)

deterioration

• (englanti) deteriorate (derivationally related)

• (englanti) deteriorate (derivationally related)
• (suomi) huonontuminen (synonyymi)

worsening

• (englanti) worsen (derivationally related)
• (suomi) heikkeneminen (synonyymi)