gloomier; gloomiest
Definition of gloomy
1a
: partially or totally dark
especially
: dismally and depressingly dark
gloomy weather
b
: having a frowning or scowling appearance : forbidding
a gloomy countenance
c
: low in spirits : melancholy
2a
: causing gloom : depressing
a gloomy story a gloomy landscape
b
: lacking in promise or hopefulness : pessimistic
gloomy prophecies a gloomy future
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Merriam-Webster unabridged
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Time Traveler for gloomy
The first known use of gloomy was in 1588
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