unsystematic

Irregular is a synonym of unsystematic.

As adjectives the difference between irregular and unsystematic

is that irregular is irregular while unsystematic is not systematic.

Jumbled is a related term of unsystematic.

As adjectives the difference between jumbled and unsystematic

is that jumbled is in disarray, mixed up while unsystematic is not systematic.

As a verb jumbled

is (jumble).

Peculiar is a related term of unsystematic.

As adjectives the difference between peculiar and unsystematic

is that peculiar is out of the ordinary; odd; curious; unusual while unsystematic is not systematic.

As a noun peculiar

is that which is peculiar; a sole or exclusive property; a prerogative; a characteristic.

Muddled is a related term of unsystematic.

As adjectives the difference between muddled and unsystematic

is that muddled is confused, disorganised, in disarray while unsystematic is not systematic.

As a verb muddled

is (muddle).