unmethodically
Definitions
In a manner that lacks a systematic or orderly plan.
Without following a regular, logical, or consistent procedure.
Examples
He approached the complex project unmethodically, jumping between tasks without a clear plan.
Because she packed her suitcase unmethodically, she struggled to find her passport at the airport.
Synonyms
haphazardly disorderly chaotically randomly aimlessly unsystematically erratically
Antonyms
methodically systematically orderly organizedly logically meticulously structuredly