astonish:
expect,
calm,
bore.
astound:
dull.
discomfit:
yield,
surrender.
disconcert:
soothe,
comfort.
dismay:
make happy,
encourage,
assure.
dumbfound:
clear up,
explicate,
explain,
lay out.
nonplus:
enlighten,
educate.
startle:
compose.