● ذَهَبَ means going; رَجَعَ means returning.
● بَلَغَ means reaching; نَزَلَ means descending.
● صَدَقَ means speaking truth; كَذَبَ means lying.
● نَفَعَ means bringing benefit; نَقَصَ means reducing.
Opposite or related meanings do not guarantee the same present weight.