blundering

noun

1. The act of making a blunder.

   “The captain's blunderings led to the loss of the ship.”

verb

1. (form-of, gerund, participle, present)present participle and gerund of blunder

   “Maccario, it was evident, did not care to take the risk of blundering upon a picket, and a man led them by twisting paths until at last the hacienda rose blackly before them.”