selsmudu'i lujvo

x1 is synonymous with / has the same meaning as x2 for interpreter x3; x1 is a synonym of x2

See selsmudukti

In notes:

The lujvo m1=l1 (text) is an equivalent/interchangable lujvo form of lujvo m2=l1 (text).
x1 is an antonym of / has polar opposite meaning from x2 for interpreter x3