senva -sev-sne- gismu

x₁ dreams about/that x₂ (fact/idea/event/state); x₂ is a dream/reverie of x₁.

Dream/reverie (= selsne). See also sipna, xanri.

In notes:

sipna: x₁ is asleep (adjective); x₁ sleeps/is sleeping.
xanri: x₁ [concept] exists in the imagination of/is imagined by/is imaginary to x₂.
se'o: evidential: I know by internal experience (dream, vision, or personal revelation).
tepsne: s₁=t₁ has a nightmare about/that s₂=t₂ (fact/idea/event/state).
vensysenva: x₁=s₁ ultradreams about x₂=s₂
voisne: x₁=s₁=v₁=ko'a dreams that they are flying (x₂=s₂="lo du'u ko'a vofli" fixed) by means x₃=v₂; x₂ is a flying dream of x₁; x₁ has flying dream x₂.
xarpe'o: x₁ is an imaginary friend of x₂.
sei'e (exp!): evidential builder: I know by means ...
erganse: x₁ [observer] senses / detects / notices x₂ (object / nu) without stimulating sensory perception organs; x₁ hallucinates
senvrxinsepcni: x₁ is a dream within dream x₂ within dream x₃ ... within dream x_n.
xipnoti: x₁ (live being) is hypnotized, in hypnotic state