to a man

Every single one

Without exception, every single person in a group.

The phrase emphasizes unanimous participation or agreement: The soldiers followed him to a man.

It can also describe complete destruction: The garrison was slaughtered to a man.

Despite the gendered language, the expression applies to any group acting with total unanimity.

Related

every last one · entirely · in unison · everyone · wholly · universally · down the line · completely · with one voice · consensus · bar none · no exceptions · one and all · comprehensively · in concert · absolutely · each · each and every

Opposites
unanimity/completeness

to a manpartially

To an incomplete extent

in part · not entirely · incompletely · here and there · sporadically

unity of purpose

to a mandivisively

In a splitting manner

half-heartedly · contentiously · discordantly · fractiously · unevenly

Family

man, woman, human, to, manly, humane, humanity, mankind, womanly

Familiarity
Top 500,000
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Used worldwide · Timeless · Abstract · Everyday, not technical · Rated G