frumpy

Mane (Îngilîzî)

1. Dowdy, unkempt, or unfashionable.
2. (dated) Bad-tempered.

Hevwate

dowdy

frumpish

old-fashioned

dishevelled

fusty

nonprogressive

outmoded

out-of-date

passe

slovenly

standpat

stodgy

stuffy

tousled

unfashionable

old-hat

unprogressive

antediluvian

passee

antiquated

antique

Werger

démodé

démodé

ultrapassado

antiquado

ακτένιστος

négligé

maltenuto

ongekamd

ouderwets

stijlloos

descuidado

رثّ

taranmamış

altmodisch

stillos

Wekî (IPA) tê bilêvkirin

/ˈfɹʌm.pɪ/

Etîmolojî (Îngilîzî)

Ji Middle English mîras hatiye girtin: frumple

In summary

Either from frump or from Middle English frumple + -y.