blunderer

One who fumbles

A blunderer is someone who makes careless mistakes or acts clumsily.

The word suggests repeated incompetence rather than a single error—a blunderer habitually stumbles through situations: The investigation was led by blunderers who contaminated evidence at every turn.

It carries more contempt than simply calling someone clumsy or mistaken.

incompetent

bungler

Inept person

hack · novice · muddler · flubber · screwup · duffer · tinkerer · dabbler · nonprofessional · greenhorn

clumsy

bumbler

Habitually clumsy person

butterfingers · bungler · tripper · falterer · stumblebum · clodhopper · lumberer · bumbling · flounderer · shuffler

fool

oaf

Stupid clumsy person

dolt · dunce · chump · clod · blockhead · nincompoop · simpleton · dunderhead · numskull · nitwit

mistake

error-prone

Tending to make mistakes

botch · goof-up · miscalculator · bungle · blooper · oversight · foul-up · snafu · misjudger · miscue

Categories
Opposites
competence and skill

blundererexpert

Highly skilled practitioner

master · virtuoso · ace · maestro · adept

care and precision

blundererperfectionist

One demanding flawlessness

precisionist · stickler · nitpicker

Phrases
Family

blunder, blundering, blunders, blundered, blunderers, blunderingly

Familiarity
Top 200,000
Profile
Used worldwide · Timeless · Concrete · Negative · Everyday, not technical · Rated G