Not useful; useless.
Having a practical or beneficial use.
able to be used for a practical purpose or in several ways
"aspirins are useful for headaches"
very able or competent in a particular area
"a useful pace bowler"
Full of use, advantage, or profit; producing, or having power to produce, good; serviceable for any end or object; helpful toward advancing any purpose; beneficial; profitable; advantageous; as, vessels and instruments useful in a family; books useful for improvement; useful knowledge; useful arts.
being of use or service;
"the girl felt motherly and useful"
"a useful job"
"a useful member of society"
of great importance or use or service;
capable of being turned to use or account;
"useful applications of calculus"
having a useful function;
"utilitarian steel tables"