open ended (adjective) open-ended: with no prearranged limit or end
Sinonime: abnormal, amorphic,
amorphous,
anomalous, assymetrical, baggy, deformed, disfigured, embryonic, ill-formed, inchoate,
indefinite, indeterminate,
indistinct,
invisible, irregular, malformed, misshapen, mutilated, nebulous, undeveloped, unformed, ungraceful, unmade, unshapely, unstructured, unsymmetrical, vague, without character, without form
Antonime: formed, proportioned, shapely, symmetrical