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on the side

on the side

50 3.9
Doing extra work besides your main job often without your boss's permission
  • idiom
  • Informal
translation icon : como actividad secundaria
  • - I really am a registered nurse... ...and I write a little on the side.
  • work on the side

I just wanted to let you know that I am working on the side with different stuff, different cool stuff.

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Examples

Synonyms

to moonlight
vson the side
30 6.1

To work at a second job in addition to your main job, often at night

is often done without official approval rather than openly
sideline
vson the side
14 4.9

A job or business someone does to earn extra money

is often undertaken without official permission rather than as a main job
side gig
vson the side
  • Informal
1 3.7

A small job done in free time to earn extra money

is frequently informal and sometimes done without employer approval
outside job
vson the side
3.9

Work you do besides your main paid work to earn extra money

is often carried out without official permission rather than being formal
sideline interest
vson the side
4.0

A hobby or small job you do beside your main job

is often work done secretly or without employer approval rather than hobby
extraprofessional
vson the side
7.2

Happening or done outside your work duties

is specifically extra work often done without formal approval or permission

Antonyms

520 3.0

In a way that a government or other authority approves

How Primary

main
1.0
part-time
51 1.4
on the side
  • Informal
50 3.9
side gig
  • Informal
1 3.7

Surface Forms

on the side positive

Morphology

on + the + side

The phrase literally combines the locative 'on' with 'side', so a learner who knows both words can infer a spatial/adjacent sense — i.e., something done 'beside' or 'in addition to' a main activity. However, the specific pragmatic meaning of an additional (often unofficial) job/activity and its adverbial use is somewhat idiomatic and requires familiarity with English usage, so it is not fully predictable.

Etymology

On the side comes from the simple image of doing something at the side of your main work, like a cook serving a sauce on the side so it is extra and separate. So on the side now means doing extra work beside your main job, often quietly or without official permission.