Having written jubilantly home to the Secretary of State that his mission had succeeded, he was now faced with the necessity of writing again to confess that this success had been ephemeral.
If you are jubilant, you feel extremely happy because of a success. Ferdinand was jubilant after making an impressive comeback from a month on the injured list. = ecstatic. extremely happy and pleased because of a success (present participle of jubilare )
joyful and proud especially because of triumph or success; "rejoicing crowds filled the streets on VJ Day"; "a triumphal success"; "a triumphant shout"