まったくの見当違いの英語

the state of being wrongly directed

misjudgment

minor differences

There's no appreciable difference.

The meaning is totally different.

a marked difference

to be exact

impalpable distinctions

a wrong action

I have missed my aim.

be out uncomfortable in a situation

a fundamental difference

they are nowise different

the condition of there being no major differences between two or more objects

You are wide of the mark.

a very slight difference

only superficial differences

something that is irrelevant

the state of something having a very slight difference

They are quite different―entirely different―（from each other）.

a very subtle difference

The taste is totally different.

being enormously different

They are by different fathers―half-brothers―half-sisters.

an enormous difference

I was wrong in my conjectures.

to be disappointed of one's hopes―be out in one's reckoning 【イディオム・格言的には：】“reckon without one's host.”

the state of being unordinary

I have done wrong―（失錯なら）―committed an imprudence―（男女関係なら）―committed an indiscretion.

distinctly dissimilar or unlike