Example : We accomplished nothing, simply because of the large number of people involved.
The problems involved.
The involved muscles.
I don't want to get involved.
Everyone involved in the bribery case has been identified.

Example : The difficulties in which the question is involved.
Brilliant leadership mired in details and confusion.

Synonyms : mired

Example : The Byzantine tax structure.
Byzantine methods for holding on to his chairmanship.
Convoluted legal language.
Convoluted reasoning.
The plot was too involved.
A knotty problem.
Got his way by labyrinthine maneuvering.
Oh, what a tangled web we weave.
Tortuous legal procedures.
Tortuous negotiations lasting for months.

Synonyms : byzantine, convoluted, knotty, tangled, tortuous

Example : A castle involved in mist.
The difficulties in which the question is involved.