निर्

निर् = न इ र
pull object water

निश् = न इ श = pull object long = whennused before च, long for knot sense
निष् = न इ ष = pullobject pointed =

नि: = न इ ह
pull object hard
pull object exists
pull inward hard
pull inward exists
pull below tight

रूढ अर्थ
compact, short
having no prop or support - pull + below + tight
Negation - pull object hard
outward movement - pull object exists