|Noah Webster's Dictionary|
(adv.) In a modest manner.
Modestly (2 Occurrences)
1 Timothy 2:9 in like manner also the women, in becoming apparel, with modesty and sobriety to adorn themselves, not in braided hair, or gold, or pearls, or garments of great price, (See NAS RSV NIV)
1 Peter 3:16 Yet argue modestly and cautiously, keeping your consciences free from guilt, so that, when you are spoken against, those who slander your good Christian lives may be put to shame. (WEY)