Bumble
Part of speech: noun
Definition: A confusion, jumble. A bumble-bee. (provincial) The bittern.
Part of speech: verb
Definition: To act in an inept, clumsy or inexpert manner; to make mistakes. To boom, as a bittern; to buzz, as a fly.
Example sentence: You've got to bumble forward into the unknown.
Falter
Part of speech: noun
Definition: unsteadiness.
Part of speech: verb
Definition: To waver or be unsteady.To stammer.To stumble.
Example sentence: My period days didn't make me falter: they made me more determined to pursue my dreams.