gratuitous


gratuitous (http://definr.com/gratuitous)

     adj 1: without cause; "a gratuitous insult"
     2: costing nothing; "complimentary tickets" [syn: complimentary,
         costless, free, gratis(p)]
     3: unnecessary and unwarranted; "a strikers' tent camp...was
        burned with needless loss of life" [syn: needless, uncalled-for]