Webster's Revised Unabridged Dictionary · 1913

Blunder

Blunder ({not transcribed}) , intransitive verb

[Old English blunderen, blondren, to stir, confuse, blunder; perh. allied to blend to mix, to confound by mixture.]

1.
To make a gross error or mistake; as, to blunder in writing or preparing a medical prescription. — Swift
2.
To move in an awkward, clumsy manner; to flounder and stumble.
I was never distinguished for address, and have often even blundered in making my bow. — Goldsmith
Yet knows not how to find the uncertain place, And blunders on, and staggers every pace. — Dryden
Collocations (1)
To blunder on , (a) To continue blundering. (b) To find or reach as if by an accident involving more or less stupidity, -- applied to something desirable; as, to blunder on a useful discovery.

Blunder , transitive verb

1.
To cause to blunder. [Obsolete]
To blunder an adversary. — Ditton
2.
To do or treat in a blundering manner; to confuse.
He blunders and confounds all these together. — Stillingfleet

Blunder , noun

1.
Confusion; disturbance. [Obsolete]
2.
A gross error or mistake, resulting from carelessness, stupidity, or culpable ignorance.