1) As a milquetoast would 2) Compliantly 3) Gently 4) Humbly 5) In a humble manner 6) In a humble way 7) In a mild manner 8) In a mousy way 9) In a submissive way 10) In a timid way 11) Obediently 12) Peacefully 13) Submissively 14) With acquiescence 15) With timidity 16) Without resistance 1) Dutifully 2) Gently 3) Humbly 4) Modestly 5) Tamely 
• (adv.) In a meek manner.
Meek'ly adverb In a meek manner. Spenser. 
[adv] - in a submissive or spiritless manner