o ‧ ver ‧ re ‧ act /ˌəʊvəriˈækt $ ˌoʊ-/ BrE AmE verb [intransitive]
[ Word Family: noun : ↑ reaction , ↑ reactor , ↑ reactionary , ↑ overreaction ; verb : ↑ react , ↑ overreact ; adjective : ↑ reactionary , ↑ reactive ]
to react to something with too much emotion, or by doing something that is unnecessary
overreact to
You always overreact to criticism.
Many investors overreacted to the stock market crash.
—overreaction /-riˈækʃ ə n/ noun [singular, uncountable] :
Their response was an overreaction.