TENACIOUSLY
doggedly, tenaciously
(adverb) with obstinate determination; “he pursued her doggedly”
Source: WordNet® 3.1
Etymology
Adverb
tenaciously (comparative more tenaciously, superlative most tenaciously)
In a tenacious manner.
Source: Wiktionary
TENACIOUS
Te*na"cious, a. Etym: [L. tenax, -acis, from tenere to hold. See
Tenable, and cf. Tenace.]
1. Holding fast, or inclined to hold fast; inclined to retain what is
in possession; as, men tenacious of their just rights.
2. Apt to retain; retentive; as, a tenacious memory.
3. Having parts apt to adhere to each other; cohesive; tough; as,
steel is a tenacious metal; tar is more tenacious than oil. Sir I.
Newton.
4. Apt to adhere to another substance; glutinous; viscous; sticking;
adhesive. "Female feet, too weak to struggle with tenacious clay."
Cowper.
5. Niggardly; closefisted; miserly. Ainsworth.
6. Holding stoutly to one's opinion or purpose; obstinate; stubborn.
– Te*na"cious*ly, adv.
– Te*na"cious*ness, n.
Source: Webster’s Unabridged Dictionary 1913 Edition