Translation guide
The English word "confusion" covers several distinct situations: mental uncertainty, misunderstanding, disorder, and even a state of embarrassment. Japanese uses different words and phrases for each.
When you are puzzled, don't understand something, or feel mentally unclear.
General word for mental confusion, chaos, or disorder in one's thoughts. Often used for large-scale confusion or personal mental turmoil.
I got confused by his explanation.
My mind is in confusion.
Literally "I don't understand the reason." Very common spoken phrase for expressing confusion or being unable to make sense of something.
I have no idea what's going on. (I'm totally confused.)
Confusion mixed with embarrassment or being at a loss. Often used when you don't know how to react.
I was confused (and at a loss) by the sudden question.
Colloquial phrase meaning "my head gets tangled up" – used when you are mentally confused or mixed up.
The complicated story made my head spin (got me confused).
Confusion from being unable to decide or not knowing what to do; often implies hesitation or bewilderment.
She showed a look of confusion/bewilderment.
When you mix up two or more things, or mistake something for something else.
Confusion in the sense of mixing up or failing to distinguish between things. Often used with する.
It's easy to confuse similar words.
General verb for making a mistake; can be used for confusing one thing with another.
Colloquial phrase meaning things get jumbled or mixed up in your mind.
All the different information is jumbled up and I'm confused.
A state of disorder, turmoil, or lack of organization, often in a physical space or a situation.
Same word as mental confusion, but also used for physical or situational chaos, disorder, turmoil.
Traffic was thrown into confusion by the accident.
Disorder, disturbance, or disruption. Often used for social order, rhythm, or mental state.
Chaos in a primordial or philosophical sense; also used for extremely disordered situations. More literary.
When confusion is mixed with embarrassment, shyness, or being flustered.
As above, but here the emphasis is on the embarrassment aspect. Often used when you are put on the spot.
I was confused/embarrassed by his frank words.
Stronger sense of being perplexed and embarrassed; at a loss for what to do or say.
Onomatopoeic phrase for being flustered or in a confused hurry.
I was flustered/confused by the unexpected visitor.
混乱 is general confusion (mental or situational chaos), while 混同 specifically means mixing up two things or mistaking one for another. Use 混同 when you confuse A with B.
I'm confused (my thoughts are in disorder).
I'm confusing A with B.
In casual speech, English 'I'm confused' is often better expressed with わけがわからない or 頭がこんがらがる. Using 混乱 in everyday conversation can sound too formal or strong.
There was confusion after the announcement.
I always confuse the two words.
She looked at me in confusion.
He confused me with my younger brother.
I took the wrong road and got confused.
The venue was in total chaos.
社会の乱れが混乱を招く。
Social disorder leads to confusion.
戦後の混沌とした時代。
The chaotic (confused) post-war era.
彼女は当惑して顔を赤らめた。
She was so confused/embarrassed that she blushed.