casual
形容词 casual:
marked by blithe unconcern
同义词:insouciant, nonchalant
without or seeming to be without plan or method; offhand
suited for everyday use
同义词:everyday
occurring or appearing or singled out by chance
同义词:accidental, chance
hasty and without attention to detail; not thorough
同义词:cursory, passing, perfunctory
occuring from time to time
同义词:occasional
characterized by a feeling of irresponsibility
同义词:fooling
natural and unstudied
同义词:free-and-easy
not showing effort or strain
同义词:effortless