systematize
The company's system for giving bonuses is totally unsystematized: it involves awarding a substantial amount of money at any time for a task that has been especially well done.
This field, rich with unsystematised stores of knowledge, has been neglected by naturalists.
His approach involved frequent and popular preaching, unconventional prayer, and unsystematized private devotion.

SMART Vocabulary: related words and phrases

Confusion, confusing and feeling confused
addled
all of a doodahidiom
all over the placeidiom
alphabet soup
at seaidiom
disarray
discombobulation
disordered
disorganization
disorganized
muddle
muddle something up
muddle-headed
muddled
mush
turmoil
unaccountable
unaccountably
unexplainable
unexplained

You can also find related words, phrases, and synonyms in the topics:

Chance and randomness