demand

[1]	require , order , bid , call (for) , insist , command
[2]	claim , ask (for) , require , insist on , exact
[3]	require , call for , need , want , necessitate , cry out for
[4]	ask (for) , inquire/enquire , request , requisition
[5]	ask , postulate , take , involve

[1]	requirement
[2]	need , request , bid , behest , requisition , order , insistence , outcry
[3]	want , need , requirement , desire , market (demand) , marketability , consumer/customer acceptance
[4]	in demand , wanted , needed , requested , coveted , popular , sought after , desired , desirable , (Brit) in request , (US) on request
[5]	on demand , on call , on request , on presentation , when requested/required , at once , immediately , without delay