noun-modifying (irregular)
Describes a state or condition that is consistent, reliable, and not easily changed or disturbed. Used prenominally to modify nouns.
彼は安定した収入を得ている。
He earns a steady income.
この国は安定した経済成長を続けている。
This country continues to have stable economic growth.
安定 (stability) + した (past/perfective form of する), functioning as a prenominal adjective. The kanji 安 means 'peaceful' and 定 means 'fixed' or 'determined'.