sick at heart

Adjective

Meaning

sick at heart (not generally comparable, comparative sicker at heart, superlative sickest at heart)

(idiomatic) Despairing, distressed, or anxious.

Source: en.wiktionary.org

heartsick

enchanted amused charmed hilarious triumphant

In public Nansen praised Amundsen; in private, according to biographer Roland Huntford, he was "sick at heart". Source: Internet

I think of you day and night and sometimes feel so sick at heart that I believe I cannot bear it any longer. Source: Internet

sick as a horse sick as a parrot sick ass sick bag sick bay sick benefit