IPA: //ʌnˈfʌsɪli//
KK: /ʌnˈfʌsɪli/
In a simple and straightforward manner, without unnecessary complications or details.
She arranged the flowers unfussily, focusing on their natural beauty rather than elaborate decorations.
Unfussily → It is formed from "un-" (meaning not) and "fussy" (from the 19th-century English word meaning overly particular or finicky) and the adverbial suffix "-ly" (meaning in a manner). The word "unfussily" means in a manner that is not overly particular or finicky.
Think of 'not' ('un-') being combined with 'fussy' to remember that 'unfussily' means doing something in a straightforward, uncomplicated way.