Stumbler
Part of speech: noun
Definition: Agent noun of stumble; one who stumbles.
Blunderer
Part of speech: noun
Definition: One who blunders.
Stumbler as a noun is agent noun of stumble; one who stumbles. while Blunderer as a noun is one who blunders.
Part of speech: noun
Definition: Agent noun of stumble; one who stumbles.
Part of speech: noun
Definition: One who blunders.
We hope you now know whether to use Stumbler or Blunderer in your sentence.