hidden

adjective

hid·​den ˈhi-dᵊn 

1

: being out of sight or not readily apparent : concealed

2

: obscure, unexplained, undisclosed

hiddenness

ˈhi-dᵊn-nəs 

noun

Synonyms

• secluded
• sheltered
• secret

Examples of hidden in a Sentence

There was a hidden flaw in the airplane's design.

the hidden costs in buying a home

Recent Examples on the Web

Depth and velocity of the water are not always obvious; the ground or road may suddenly wash away and hidden dangers may exist; do not attempt to evacuate through floodwaters. —Staff Reports, AZCentral.com, 4 Sep. 2025

The restaurant's decor includes Japanese menu boards with hidden messages. —Lennie Omalza, The Courier-Journal, 3 Sep. 2025

Embark on a small-ship cruise in Baja Unlike mega–cruise ships that dock in bustling tourist ports, UnCruise’s small vessels navigate Baja’s secluded coves and hidden inlets, granting a proverbial backstage pass to places few travelers ever see. —Uncruise Adventures, AFAR Media, 3 Sep. 2025

Their innovation was something called backpropagation, or backprop for short, which was a method for correcting the outputs of the middle, hidden layer of neurons during each training pass so that the network as a whole could learn efficiently. —Jeremy Kahn, Fortune, 3 Sep. 2025

Word History

First Known Use

13th century, in the meaning defined at sense 1

Phrases Containing hidden

• hidden agenda
• hidden tax

Rhymes for hidden

• bidden
• midden
• ridden
• swidden
• bedridden
• unbidden
• gramicidin
• overridden