Astonished rhymes with:
admonished, admonished, banished, burnished, diminished, finished, furnished, garnished, punished, refinished, replenished, semifinished, tarnished, undiminished, unfinished, unpunished, unvarnished, vanished, varnished
admonished, admonished, banished, burnished, diminished, finished, furnished, garnished, punished, refinished, replenished, semifinished, tarnished, undiminished, unfinished, unpunished, unvarnished, vanished, varnished