(iv) = secretly.
subdūcere = withdraw secretly.
(v) = slightly.
subrīdere = laugh somewhat, smile.
sublustris = giving some light.
SUPER = over, upon.
(i) = over, upon (of place).
superpōnere = place upon or over.
(ii) = metaphorically.
sūperesse = remain, survive, abound.
TRANS-, TRA-, = across.