složen

1. complex; complicated
   To je veoma složen problem. — That's a very complex problem.
   Situacija je složenija nego što misliš. — The situation is more complicated than you think.
2. (in grammar) compound; consisting of two or more clauses
   Reč „železnica“ nije složena reč. — The word "železnica" is not a compound.
   Ova složena rečenica ima tri dela. — This sentence has three clauses.
3. (of things) folded; stacked
   Veš je složen u ormaru. — The laundry is folded in the wardrobe.

Do not confuse with složan "united, in agreement". In grammar složena rečenica is any sentence with two or more clauses, whether compound or complex.