stodgy

The Queen's guards outside Buckingham Palace might seem stodgy (or stuffy and stuck-up), but they are only doing their job.

Stodgy is an adjective to describe anything dull, out-of-style, or even hard to digest. Just your luck getting stuck sitting next to stodgy Aunt Irma at Thanksgiving! From the looks of her stodgy moth-smelling clothes to her stodgy or dull conversation, chances are it will be a long meal. Just hope the mashed potatoes are light and fluffy.

Definitions of stodgy
1

adj excessively conventional and unimaginative and hence dull

“why is the middle class so stodgy, so utterly without a sense of humor?”
“a stodgy dinner party”
Synonyms:
stuffy
conventional
following accepted customs and proprieties

adj (used pejoratively) out of fashion; old fashioned

Synonyms:
fogyish, moss-grown, mossy, stick-in-the-mud
unfashionable, unstylish
not in accord with or not following current fashion

adj heavy and starchy and hard to digest

stodgy food”
“a stodgy pudding served up when everyone was already full”
Synonyms:
indigestible
digested with difficulty