IPA: //ˈfrʌmpɪʃ//
KK: /frʌmpɪʃ/
Someone who is dull or plain in appearance or style, often appearing old-fashioned or unfashionable.
She wore a frumpish dress that seemed out of style.
Comparative: more frumpish
Superlative: most frumpish
Frumpish is derived from the word 'frump' (originating from the late 19th century, possibly from the dialectal 'frump' meaning to sulk or be grumpy) combined with the suffix '-ish' (meaning having the quality of). The word 'frumpish' describes someone who has the qualities of being grumpy or dowdy.
Think of someone who is 'grumpy' ('frump') and has the quality of that demeanor ('-ish'). This helps you remember that 'frumpish' refers to a grumpy or dowdy attitude.