problem [a]
- schwierig
- diffizil
- kompliziert
- schwer verständlich
complicated [a]
- kompliziert
- komplex
- verwickelt
system [n]
- Komplex [m]
psychology [n]
- Komplex [m]

problem [a]
- difficile
- difficile à comprendre
- compliqué
- complexe
complicated [a]
- compliqué
- complexe
system [n]
- complexe [m]
psychology [n]
- complexe [m]

problem [a]
- difficile
- complicato
- complesso
complicated [a]
- complicato
- complesso
system [n]
- complesso [m]
psychology [n]
- complesso [m]

problem [a]
- difícil
- complicado
- intrincado
- difícil de entender
complicated [a]
- complicado
- complejo
system [n]
- complejo [m]
- red [f]
psychology [n]
- complejo [m]

problem [a]
- moeilijk
- ingewikkeld
- gecompliceerd
- netelig
complicated [a]
- gecompliceerd
- ingewikkeld
system [n]
- complex [n]
psychology [n]
- complex [n]

problem [a]
- krånglig
- invecklad
- svår
complicated [a]
- komplicerad
- invecklad
system [n]
- komplex [n]
psychology [n]
- komplex [n]

problem [a]
- difícil
- difícil de entender
- complexo
- intrigante
complicated [a]
- complicado
- complexo
system [n]
- complexo [m]
- rede [f]
psychology [n]
- complexo [m]

complicated [a]
- difficult
- convoluted
- involved
- puzzling
- intricate
- perplexing
- hard
composite [a]
- elaborate
- compound
- conglomerate
- multiple
- mixed
- manifold
- heterogeneous
network [n]
- system
- structure
- tangle
- group
- compound
- complication
- net
obsession [n]
- phobia
- mania
- neurosis
- fixation
- repression
- hang-up
- delusion

Present participle; Past participle
- complexing
- complexed
Present
- complex
- complex
- complexes
- complex
- complex
- complex
Past
- complexed
- complexed
- complexed
- complexed
- complexed
- complexed
Future
- will complex
- will complex
- will complex
- will complex
- will complex
- will complex
Present conditional
- would complex
- would complex
- would complex
- would complex
- would complex
- would complex
Present Perfect
- have complexed
- have complexed
- has complexed
- have complexed
- have complexed
- have complexed
Past Perfect
- had complexed
- had complexed
- had complexed
- had complexed
- had complexed
- had complexed
Future Perfect
- will have complexed
- will have complexed
- will have complexed
- will have complexed
- will have complexed
- will have complexed
Past conditional
- would have complexed
- would have complexed
- would have complexed
- would have complexed
- would have complexed
- would have complexed
Imperative
- -
- complex
- -
- -
- -
- -