asseverate

v. declare; affirm

Verb
1. state categorically
(synonym) assert, maintain
(hypernym) insist, take a firm stand
(hyponym) allege, aver, say
(derivation) assertion, averment, asseveration

v. assert, state, affirm, declare

(v. t.)
To affirm or aver positively, or with solemnity.
  

ADV
earnestly| emphatically