i Register
In some senses, disappeared is marked as informal, euphemistic. Watch for register when choosing this word.
ADJ.
beyond, close, distant, instant, last, little, long, old
VERB + DISAPPEARED
knew, ship, turn
DISAPPEARED + NOUN
advent, horizon, road, trace
PREP.
between, down, from, in, into, with, without
ADV.
away, gradually, then