How to say "seasoned" in Japanese

• 歴戦れきせんCommon
  no-adjectiveCovers 'seasoned' in the battle-hardened sense: someone with long military service who has come through many battles. It fits a seasoned soldier or veteran, and the image is strongly martial.
• 老巧ろうこう
  na-adjective, nounCovers 'seasoned' meaning experienced and skilled, with ability matured by long practice rather than battle. It is the less common of the two, so it is seldom the first choice for this sense.

Choose 歴戦, the common word, when 'seasoned' means battle-hardened after long military service, as of a soldier; choose 老巧, which is less common, for 'seasoned' meaning simply experienced and skilled.

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

• 歴戦れきせんveteran (e.g. soldier)
• 老巧ろうこうexperienced