superfun

As a noun terms

is .

As an adjective superfun is

extremely fun.

As a noun supergun

is a very large cannon with an extremely high muzzle velocity and large bore.

As an adjective superfun is

extremely fun.

As a noun superfund

is (british|finance) a investment vehicle for superannuation assets or superfund can be (finance) an investment fund that invests in other investment funds; a fund of funds.

As an adjective superfun is

extremely fun.

As a noun superfan

is an extremely dedicated fan.

As an adjective superfun is

extremely fun.