the.com/underestimate

The one mistake you only make once, or forever, depending how big it was.

means To guess too low on how strong, capable, or significant someone or something actually is.

from Built from Latin-rooted pieces: 'under' (beneath, too little) plus 'estimate,' from Latin aestimare, meaning to appraise or set a value on something. Aestimare originally lived in the world of commerce and judgment — assessing worth, often of money, goods, or risk. So 'underestimate' literally means to value something at less than its true price, a sense that slid easily from money into people, danger, and consequence.

favorite victims
opponents who seem too calm to be dangerous
self-version
the quiet killer of ambition, disguised as modesty
never on time
always discovered after the damage is done
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