upside down

adverb

up·​side down ˈəp-ˌsīd-ˈdau̇n 

1

: in such a way that the upper and the lower parts are reversed in position

2

: in or into great disorder

turned their world upside down

upside-down

ˈəp-ˌsīd-ˈdau̇n 

adjective

Examples of upside down in a Sentence

You hung the picture upside down!

To remove the plant, turn the pot upside down and tap gently on the bottom to loosen it.

The baby was holding the book upside down.

Recent Examples on the Web

Lying upside down might also help with regulating their temperature, cooling it off thanks to the fresh air hitting their fins. — Gennaro Tomma, Scientific American, 22 July 2026

They’re then dipped upside down in more chocolate to create a crunchy shell. — Michele Laufik, Martha Stewart, 22 July 2026

Multiply it across roughly a half-million setae per foot, each branching into hundreds of contact points, and the combined force is enough to let a gecko hang from a single toe or sprint upside down across a ceiling. — Scott Travers, Forbes.com, 21 July 2026

Both of us transported back to the long months after our son was born, my postpartum depression turning everything upside down. — Literary Hub, 20 July 2026

Word History

Etymology

alteration of Middle English up so doun, from up + so + doun down

First Known Use

15th century, in the meaning defined at sense 1

Rhymes for upside down

• adown
• blowdown
• breakdown
• countdown
• crackdown
• crosstown
• downtown
• drawdown
• dropdown
• facedown
• godown
• hometown

Kids Definition

upside down

adverb

up·​side down ˌəp-ˌsīd-ˈdau̇n 

1

: with the upper part underneath and the lower part on top

2

: in or into great disorder

upside-down adjective

Legal Definition

upside down

adjective

: underwater

upside down mortgages

upside down homes

upside down homeowners