Learner's definition of INVOLVED
1 [more involved; most involved] : very complicated
a long and involved story
The instructions for assembling the toy are very involved.
The process is quite involved.
not used before a noun
2 a : having a part in something : included in something — often + in
b [more involved; most involved] : actively participating in something
He is involved in a lawsuit.
I don't want to become involved in this argument.
This department was not involved in the decision.
— often + in c : having a romantic or sexual relationship — often + with
Students who stay involved get more out of the program.
If you want to make things better, you need to get involved.