amateurishly
adverb
- in an unprofessional manner, poorly done
Wiktionary
adv
Etymology: Etymology tree English amateurish Middle English -ly English -ly English amateurishly From amateurish + -ly.
- In an amateurish manner; without expertise or professionalism.
“He came in and we went out to the back area I'd bricked amateurishly years ago.”