Literary / written. In speech, native speakers will reach for 顺应 (shùnyìng, 'comply with / adapt to') or 适应 (shìyìng, 'adapt to'). 顺适 carries a slightly classical tone.
memory
顺 (shùn, 'go-with-the-flow') + 适 (shì, 'fit / suit') — both characters mean 'align with circumstances', so the compound just doubles down. Whenever you see 顺X or X适, 'matching / fitting' is usually the core idea.
