gained or acquired; especially through merit or as a result of effort or action; "a well-earned reputation for honesty"; "earned income"; "an earned run in baseball"
not easily borne; wearing; "the burdensome task of preparing the income tax return"; "my duties weren't onerous; I only had to greet the guests"; "a taxing schedule"
difficult to penetrate; incomprehensible to one of ordinary understanding or knowledge; "the professor's lectures were so abstruse that students tended to avoid them"; "a deep metaphysical theory"; "some recondite problem in historiography"
requiring more than usually expected or thought due; especially great patience and effort and skill; "found the job very demanding"; "a baby can be so demanding"
meriting respect or esteem; "the worthy gentleman"
having worth or merit or value; being honorable or admirable; "a worthy fellow"; "no student deemed worthy, and chosen for admission, would be kept out for lack of funds"- Nathan Pusey; "worthy of acclaim"; "worthy of consideration"; "a worthy cause"