on demand
• as soon as or whenever required.
• "a combination boiler provides hot water on demand"
in demand
• sought after.
• "all these skills are much in demand"
Similar:
sought-after,
desired,
coveted,
wanted,
requested,
required,
marketable,
desirable,
popular,
in vogue,
fashionable,
all the rage,
at a premium,
like gold dust,
big,
trendy,
hot,
to die for,
all the go,
