1) Ceaselessly 2) Continually 3) Determinedly 4) Inexorably 5) Relentlessly 6) Repeatedly 7) Stubbornly 8) Vigorously 1) Consistently 2) In a persistent manner 3) Inexorably 4) Insistently 5) Obstinately 6) Uncompromisingly 7) Unfalteringly 8) Unremittingly 9) Unwaveringly 10) With conviction 11) With persistence 
• (adv.) In a persistent manner.
Per·sist'ent·ly adverb In a persistent manner. 
[adv] - in a persistent manner 2. [adv] - with persistence
persistently To continue to exist past the usual time, or to continue to do something in a determined way even when facing difficulties or opposition. Quotations Nothing in this world can take the place of persistence. Talent will not; nothing is more common than unsuccessful people with talent....
adverb with persistence