THESAURUS
humbly
abjectly, apologetically, contritely, meekly, modestly, on all fours, on bended knee, penitentially, penitently, quietly, repentantly, sheepishly, submissively, unassumingly, unobtrusively, unostentatiously, unpresumptuously, unpretendingly, unpretentiously, with bated breath, with due deference, without ceremony
ROGET THESAURUS
humbly
Modesty
N
modesty, humility, diffidence, timidity, retiring disposition, unobtrusiveness, bashfulness, mauvaise honte, blush, blushing, verecundity, self-knowledge, reserve, constraint, demureness, blushing honors, modest, diffident, humble, timid, timorous, bashful, shy, nervous, skittish, coy, sheepish, shamefaced, blushing, overmodest, unpretending, unpretentious, unobtrusive, unassuming, unostentatious, unboastful, unaspiring, poor in spirit, out of countenance, reserved, constrained, demure,
humbly, quietly, privately, without ceremony, without beat of drum, sans fa, not stepping o'er the bounds of modesty, thy modesty's a candle to thy merit.