first thing
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Before anything else; without delay. For example, Tom was supposed to call him first thing in the morning. [Late 1500s] Also see under first and foremost; first off.
QUIZ
QUIZ YOURSELF ON "IS" VS. "ARE"
"Is" it time for a new quiz? "Are" you ready? Then prove your excellent skills on using "is" vs. "are."
Question 1 of 7
IS and ARE are both forms of which verb?
Words nearby first thing
first sergeant, First State, first strike, first-string, first-termer, first thing, first things first, first-time, first-timer, first water, First World
The American Heritage® Idioms Dictionary
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