IPA: /ˈɡluːmiəst/
KK: /ˈɡlumɪst/
The most sad or dark in mood or atmosphere.
The weather was the gloomiest it had been all week, making everyone feel down.
Comparative: gloomier
Superlative: gloomiest
Gloomiest → It is formed from "gloom" (from Old English *glōm*, meaning darkness or shadow) and the superlative suffix "-iest" (meaning most). The word "gloomiest" refers to the state of being the most dark or shadowy.
Think of the Old English word for darkness, 'gloom', and remember that 'gloomiest' means the most dark or shadowy.
No commonly confused words.