adventitious - accidental, fortuitous, casual, irrelevant, incidental, 우연히 얻은, 우연의, 우발의, 후천적인

• The weird-looking plant is adventitious and not native to this country.
• While the band was not popular in its native country, it did find adventitious celebrity in other countries.
• The marine biologist classified the fish as adventitious because it is not normally found in bodies of saltwater.