casually Synonyms

nonchalantly thinly fortuitously at first glance at random haphazardly indiscriminately unknowingly by the bye by the way lackadaisically languidly lethargically aimlessly inadvertently offhanded torpidly trivially unawares unessentially vagrantly wanderingly whimsically spontaneously by chance unexpectedly unintentionally incidentally limply listlessly breezily unconcernedly unhurriedly unwittingly unpredictably unsystematically unthinkingly untucked worthlessly as a by-product as side effect not profoundly not thoroughly tenuously unceremoniously stochastically lukewarmly en passant heedlessly messily