farlu -fal-fa'u- gismu

x₁ falls/drops to x₂ from x₃ in gravity well/frame of reference x₄.

Note: things can fall in spin, thrust, or tide as well as gravity; (agentive "drop" = one of two lujvo: falcru and falri'a). See also lafti, cpare, klama, sfubu.

jbovlaste

In notes:

cpare: x₁ climbs/clambers/creeps/crawls on surface x₂ in direction x₃ using x₄ [limbs/tools].
klama: x₁ comes/goes to destination x₂ from origin x₃ via route x₄ using means/vehicle x₅.
lafti: x₁ (force) lifts/applies raising/supporting force to x₂ at locus x₃ in gravity well x₄.
sfubu: x₁ dives/swoops [manner of controlled falling] to x₂ from x₃.
barfa'u: b₁=f₁ falls outside of b₂ from (inside of) f₃
falgau: g₁ makes f₁ fall.
falpu'i: p₁ drops / puts by dropping p₂=f₁ onto p₃=f₂ from f₃ in frame of reference f₄
rajroksfe: s₁=rs₁ is a vertical rock face / rock surface of rock / mountain rs₂ on side rs₃ with edges rs₄, vertical in reference frame/gravity s₂.
tolfa'u: f₁ rises to f₂ from f₃ in gravity well/frame of reference f₄.
kenjisefa: x₁ is a black hole/singularity with radius of event horizon x₂