Denshi Jisho — Online Japanese dictionary

当然 とうぜん natural; as a matter of course
Common word, Na-adjective, No-adjective 
当然の事 とうぜんのこと a matter of course; what is to be expected; par for the course
Expression 
当然視する とうぜんしする to consider to be inevitable; to consider to be reasonable
Suru verb - irregular 
当然のこと とうぜんのこと a matter of course; what is to be expected; par for the course
Expression 
当然のことながら とうぜんのことながら naturally; not surprisingly; it should be appreciated that; understandably; as a matter of course; as is obvious; as will be understood
Expression 

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