fisli experimental gismu

x1 is physical/actual/pertains to physics in aspect x2 (ka) of type x3 by standard/in metaphysics x4

Perhaps includes (but would not be limited to): material, bodily, tangible. x1 need not be a substance/matter; spacetime, physical quantities (such as energy), virtual particles, and even the rules of physics and some mathematical theorems could be considered to be physical. See also: jikfi, termu'e, termu'eske, mairza'i, tifmu'eza'i, dacti, marji, xanri, fatci, menli, cinmo, cmaci.

In notes:

x1 (force) is physically strong in aspect x2 by standard x3
x1 is a physical interaction [colloquially: force] between x2 (interacting participants/objects; symmetric) with characteristics/of type x3