on the side

US /ɑːn ðə saɪd/
UK /ɑːn ðə saɪd/
"on the side" picture
1.

làm thêm, ngoài ra

in addition to one's main job or activity, often secretly or informally

:
He works as a teacher, but he also does some freelance writing on the side.
Anh ấy làm giáo viên, nhưng cũng viết lách tự do làm thêm.
She sells handmade jewelry on the side to earn extra income.
Cô ấy bán trang sức thủ công làm thêm để kiếm thêm thu nhập.
2.

riêng, kèm theo

as a separate or distinct part of something, often referring to a dish served with a main meal

:
I'd like the steak with a salad on the side.
Tôi muốn món bít tết kèm salad riêng.
Can I get the sauce on the side?
Tôi có thể lấy nước sốt riêng không?