The difference between Blunder and Fumble

When used as nouns, blunder means a clumsy or embarrassing mistake, whereas fumble means a ball etc. that has been dropped by accident.

When used as verbs, blunder means to make a clumsy or stupid mistake, whereas fumble means to handle nervously or awkwardly.

check bellow for the other definitions of Blunder and Fumble

Blunder as a verb (intransitive):

To make a clumsy or stupid mistake.

Examples:

"to blunder in preparing a medical prescription"
Blunder as a verb (intransitive):

To move blindly or clumsily.
Blunder as a verb (transitive):

To cause to make a mistake.
Blunder as a verb (transitive):

To do or treat in a blundering manner; to confuse.

Fumble as a verb (transitive, intransitive):

To handle nervously or awkwardly.

Examples:

"Waiting for the interview, he fumbled with his tie."

"He fumbled the key into the lock."
Fumble as a verb (transitive, intransitive):

To grope awkwardly in trying to find something

Examples:

"He fumbled for his keys."

"He fumbled his way to the light-switch."
Fumble as a verb (intransitive):

To blunder uncertainly.

Examples:

"He fumbled through his prepared speech."
Fumble as a verb:

To grope about in perplexity; to seek awkwardly.

Examples:

"to fumble for an excuse"
Fumble as a verb (transitive, intransitive, sports):

To drop a ball or a baton etc. by accident.
Fumble as a verb:

To handle much; to play childishly; to turn over and over.

Fumble as a noun (sports, American football, Canadian football):

A ball etc. that has been dropped by accident.