Perseveringly.

In a persevering manner; persistently; continually.

Constantly, continually, assiduously.

Unweariedly.

With persistent or pressing action or purpose; persistently, urgently.

Constantly, continually, assiduously.

Persistently, perseveringly; importunately.

With persistent or pressing action or purpose; = importunately, adv. 2. Now rare.

With painstaking effort or zeal; zealously, keenly; persistently.

In an indefatigable manner; unweariedly; with unremitting perseverance.

In a persevering manner; steadfastly, persistently.

Without wearying; indefatigably.

In an unwearied manner.

In a tenacious manner; with a strong hold; persistently, steadfastly, stubbornly.

Persistently; with persistence.

Like a dog in behaviour. With the persistence of a dog (sometimes with positive connotations); obstinately, stubbornly; resolutely.

In a manner worthy of a dog; with the courage or persistence befitting a dog.

The quality of being unwearying.

In a persistent manner; continuously.