How to say "decreasing" in Japanese

• 右下がりみぎさがり
  expression, no-adjectiveIts 'decreasing' sense is specifically a graph falling to the right — a downward-sloping line; it also means shrinking or declining. A less common word, not a general term for 'decreasing'.
• 右肩下がりみぎかたさがり
  expression, no-adjectiveA close synonym of 右下がり: 'decreasing' as a graph falling to the right, with related senses of shrinking and declining. Also less common; like 右下がり, it is not a general-purpose word for 'decreasing'.
• 損減そんげん
  noun, suru verbMatches 'decreasing' in the general sense of diminishing or abating, and can also mean shortening. A less common word, seldom the everyday choice for 'decreasing'; it does not describe a falling graph.

Use 「右下がり」 or 「右肩下がり」 for 'decreasing' as a graph falling to the right — they are close synonyms; use 損減 for decrease in the general sense of diminishing or abating, though it is itself less common.

Usage comparisons are AI-assisted and cross-checked by multiple models; for study reference only

• 右下がりみぎさがりdecreasing (graph falling to the right)
• 右肩下がりみぎかたさがりdecreasing (graph falling to the right)
• 損減そんげんdecreasing