Complicated

The science experiment involved complicated calculations.

The architecture of the building is very complicated and unique.

The instructions for assembling the bookshelf were too complicated for me to follow.

Her health issues are complicated and require specialist care.

The assembly instructions for the furniture were a bit complicated, but we managed to figure it out.

The legal case is quite complicated and may take months to resolve.

The process of getting a driver's license can be complicated, but it's necessary to drive legally.

She has a complicated relationship with her father.

The financial analysis report was too complicated for the average person to understand.

The math problem was too complicated for the students to solve.

The relationship between the two characters in the book was complicated and nuanced.

Solving this mathematical problem is more complicated than I thought.

Dealing with this customer's complaint was very complicated.

The political situation in the country is very complicated and difficult to resolve.

The technology involved in creating the new product is very complicated.

The design of the new building is quite complicated.

The instructions to assemble the bookshelf are complicated.