dreich

Extending for a long distance or time, especially when tedious or wearisome; long-drawn-out, protracted; also, of speech or writing: unnecessarily verbose; long-winded.

Not enjoyable or interesting; boring, dull.

Bleak, cheerless, dismal, dreary, miserable.

suitably serious or solemn

of a person: patient, stoic, tolerant, resolute

Slow, sluggish; specifically, of a person: tending to delay or procrastinate (especially when paying for something).

Of a person: having a dejected or serious appearance or mood; dour, gloomy, moody, morose, sullen.

Of a task: laborious, tedious, troublesome; hence, needing concentration to understand; intricate.

Chiefly of rain: without pause or stop; continuous, incessant.

Of weather: dreary, gloomy (cold, overcast, rainy, etc.).