i Register
In some senses, exclaim is marked as obsolete. Watch for register when choosing this word.
ADV
loudly, softly | angrily, indignantly | helplessly, weakly | triumphantly | suddenly
PREP
at, in
The children exclaimed in delight when they saw the surprise birthday cake.
over
The children exclaimed over the enormous birthday cake decorated with colorful frosting.
with
The children exclaimed with excitement when they saw the circus elephants arriving.