vt to cause to blunder.
2. blunder ·noun confusion; disturbance.
3. blunder ·vi to move in an awkward, clumsy manner; to flounder and stumble.
4. blunder ·vt to do or treat in a blundering manner; to confuse.
5. blunder ·noun a gross error or mistake, resulting from carelessness, stupidity, or culpable ignorance.
6. blunder ·vi to make a gross error or mistake; as, to blunder in writing or preparing a medical prescription.