①Learner's definition of JUST（道徳的に正しいとか公正）
a : agreeing with what is considered morally right or good : fair
例文：a just society
a just cause for war
a just decision
②Learner's definition of RIGHT（JUSTと意味は同じだが、名詞の前には用いられない）
usually not used before a noun : morally or socially correct or acceptable
例文：Stealing is not right.
You can't treat me like this! It's not right!
You were right to tell the teacher about the girl who you saw cheating.
: a moment ago(たった今しがた)
I saw him just now.
I was just this minute thinking about calling you.
: at this moment(たった今)
They are just now heading out the door.
just on British, informal
: in the next moment : immediately(直ちに)
Please clean up this mess right now.
: at the present time（たった今）
He is out of the office right now.