Adverb
in an unfortunate or deplorable manner
Source: WordNetGod grant that by my persevering labours I may bring a little stone to the frail and ill-assured edifice of our knowledge of those deep mysteries of Life and Death where all our intellects have so lamentably failed. Louis Pasteur
For honest merit to succeed amid the tricks and intrigues which are now so lamentably common, I know is difficult; but the honor of success is increased by the obstacles which are to be surmounted. Let me triumph as a man or not at all. Rutherford B. Hayes
Regulators are a backstop: they don't own banks. The governance at the top of our leading banks has been shown to be lamentably weak. No one at the top of Barclays will take responsibility for systemic abuse. Vince Cable
The God of Peace, the God of Truth will shortly seal this truth, and confirm this witness, and make it evident to the whole world, that the doctrine of persecution for cause of conscience, is most evidently and lamentably contrary to the doctrine of Christ Jesus the Prince of Peace. Amen. Roger Williams (theologian)
he was sadly neglected Source: Internet
it was woefully inadequate Source: Internet