Blunder
Part of speech: noun
Definition: A clumsy or embarrassing mistake.
Part of speech: verb
Definition: To make a stupid mistake. To move blindly or clumsily.
Example sentence: Operation Bluestar was a mischievous blunder, and it should not have been done.
Fumble
Part of speech: verb
Definition: To idly touch or nervously handleTo grope awkwardly in trying to find somethingTo blunder uncertainlyTo drop a ball or a baton etc
Part of speech: noun
Definition: A ball etc. that has been dropped