Miscalculator

Part of speech: noun

Definitions

1. An individual who makes errors in calculations or estimations
2. a person whose misjudgments stem from incorrect numerical assessments
3. someone prone to miscalculating or misjudging situations based on faulty arithmetic or reasoning

Etymology: "Miscalculator" is built from "miscalculate" and the agent suffix "-or," which marks a person who performs an action. "Miscalculate" itself combines the prefix "mis-," meaning wrongly or badly, with "calculate," which comes from Latin "calculare," to reckon, originally with small pebbles used as counters on a reckoning board. The result is simply a person who reckons wrongly, and the word follows the same pattern as other agent nouns in English formed by adding "-or" to a verb.

Synonyms: miscounter, misjudger

Antonyms: calculator, estimator