first thing

Right at dawn

First thing means at the earliest opportunity, typically at the start of the day or work period: I'll call you first thing tomorrow, She checks her email first thing in the morning.

The phrase implies immediate priority—before anything else gets attention.

beginning

dawn

Day's first glow

start · commencement · origin · onset · threshold · advent · birth · foundation · kickoff · baseline

morning

sunrise

Morning light's arrival

breakfast · shower · routine · commute · cereal · stretching · yoga · jogging · newspaper · sunlight

priority

urgent

Needing immediate attention

imperative · primary · vital · pressing · critical · fundamental · top · precedence · main · chief

Opposites
temporal priority

first thinglast thing

Ultimate item remaining

at the end · finally · at the last minute · in the end · ultimately

priority/importance

first thingafterthought

Idea added belatedly

back burner · last resort · minor detail

Family

first, thing, things, foremost, first-rate, firstly, firsthand, first-class, firstborn

Familiarity
Top 10,000
Profile
Known to kids · Used worldwide · Timeless · Everyday, not technical · Rated G