1 B1 informal
To begin a task or activity, often with energy or immediacy
"We have a lot to do today, so let's just start in."
start in
B1 informal intransitive
To begin doing something, especially eagerly, abruptly, or without much preparation
In plain English
To begin something, usually quickly or without waiting
What does "start in" mean?
3 meanings, ordered from most common to least. Color-coded by CEFR level.
2 B2 idiomatic informal
To begin criticizing, scolding, or lecturing someone
"As soon as I walked through the door, my roommate started in about the dirty dishes."
3 B1 informal
To begin eating or consuming something
"Don't wait for me — go ahead and start in on the appetizers."
Literal vs figurative
Words literally mean
To start going in — entering or diving into an activity
Actually means
To begin something, usually quickly or without waiting
Usage tip
Common in American English. Often implies starting something with energy or without hesitation. Can also mean to begin criticizing or nagging someone (see sense 2). In this second use, it is close to 'start in on'.
Words that pair with "start in"
Natural word combinations native speakers use most often.
work meal story lecture complaints task
How to conjugate "start in"
The five tense forms you'll use most often.
Base
start in
I/you/we/they
3rd person
starts in
he/she/it
Past simple
started in
yesterday
Past participle
started in
have + pp
-ing form
starting in
continuous
Hear "start in" in the wild
Listen to native speakers using "start in" in real YouTube videos — click a clip to watch it on Looplines.
Other ways to say "start in"
Swap in when you want variety — tap a linked one to explore it.
Keep exploring
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