unsystematic
adjective
[ ˌʌnsɪstəˈmatɪk ]
• not done or acting according to a fixed plan or system; unmethodical.
• "the burial mound was excavated in an unsystematic way"
Similar:
unmethodical,
uncoordinated,
undirected,
disorganized,
unarranged,
unplanned,
unpremeditated,
indiscriminate,
random,
inconsistent,
desultory,
patchy,
fragmentary,
sketchy,
sporadic,
spasmodic,
fitful,
inconstant,
intermittent,
irregular,
erratic,
stray,
spot,
casual,
occasional,
haphazard,
chaotic,
non-linear,
entropic,
fractal,
