addto
verbUK /ˈæd tuː/
US /ˈæd tuː/
To put something together with something else so there is more.
Please add two more apples to the basket.
OTHER MEANINGS
2. To say more about something you already said.
She added to her story with one more funny detail.
3. To make a number or amount bigger.
Add five to ten and you get fifteen.
4. To put extra things into a food or drink.
He likes to add sugar to his tea.
5. To make a feeling or problem stronger.
The loud noise added to my headache.