How to say "understandably" in Japanese

• 当然ながらとうぜんながら
  expression, adverbCovers 'naturally; of course; understandably': it states that a reaction or outcome is only to be expected given the circumstances. A less common rendering, suited to plainly asserting something is a matter of course.
• 当然のことながらとうぜんのことながら
  expression, adverbMeans 'naturally; not surprisingly; understandably', with the added flavor of 'it should be appreciated that': it presents a point as something the reader should simply accept. Also a less common choice for 'understandably'.

Both phrases present something as natural or to be expected, and both are less common renderings of 'understandably'; use the shorter 「当然ながら」 for plain 'naturally, of course', and 「当然のことながら」 for the added 'it should be appreciated that' framing.

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

• 当然ながらとうぜんながらnaturally
• 当然のことながらとうぜんのことながらnaturally