indistinctive

from The Collaborative International Dictionary of English v.0.48

Indistinctive \In`dis*tinc"tive\
   ([i^]n`d[i^]s*t[i^][ng]k"t[i^]v), a.
   Having nothing distinctive; common. --
   {In`dis*tinc"tive*ness}, n.
   [1913 Webster]