iOS 11 and later include a neat built-in dictionary feature that lets you quickly look up the definition of words on your iPhone or iPad, even if an internet connection is unavailable.

It's a handy recourse if someone breaks out a "big word" during a conversation, or you come across an expression in a book or on the web that you don't quite understand.

dictionary in ios11
There are a couple of ways to access the dictionary which we've outlined below. Keep them in mind, and with a little luck, you won't have to consult a physical dictionary, a third-party dictionary app, or an online definition service the next time you want to know the meaning of a word.

How to Get a Word Definition

  1. On your iOS device, swipe right on the Lock screen or Home screen to display the Today view. Alternatively, swipe down on the Home screen to invoke the Search screen.

  2. Tap the search field if it isn't already active, and begin typing the word that you want to define. (You can also tap the microphone icon and say the word – if you know how to pronounce it.)

  3. Read the dictionary definition preview that appears in the search results, or tap it to see the extended definition.

ios 11 dictionary 1
In our experience, these definitions can occasionally get mixed up with Wikipedia suggestions from Siri. If you want to increase the chances that you get a dictionary definition first, go to Settings -> Siri & Search and toggle off Suggestions in Search.

How to Look Up a Word Within an App

If you come across a word you don't know in a document or email, or even when browsing the web, use the following method to look up its definition.

  1. Tap and hold your finger on the word to highlight it.

  2. Tap Look Up in the pop-up menu.

  3. Read the dictionary definition preview that appears in the Look Up results, or tap it to see the extended definition.

ios 11 dictionary look up 1
If you don't see any word definitions in the search results, it's likely you haven't got any dictionaries installed on your iOS device.

To remedy this, scroll down to the bottom of the results screen and tap Manage Dictionaries. You'll be presented with a list of dictionaries available to you. Simply tap the ones you want to download and they'll be automatically installed on your device.

ios 11 dictionary lookup 2
The next time you look up a word, you'll get individual definitions from every dictionary that's installed. Note that you can add and remove dictionaries at any time by ticking/unticking them in Settings -> General -> Dictionary.

Finally, if you're seeking a more feature-rich lexical resource to explore words and phrases, check out the Terminology app for iPhone and iPad. [Direct Link]

Top Rated Comments

ignatius345 Avatar
91 months ago
These how to guides are becoming spam when you have nothing else to report. Keep all this in one section so it doesn’t mix with actual rumors and news
More interesting and useful than a story about Carpool frickin’ Karaoke, thanks.
Score: 8 Votes (Like | Disagree)
unsharptooth Avatar
91 months ago
More interesting and useful than a story about Carpool frickin’ Karaoke, thanks.
Seriously, I want this kind of post. I moved to macOS like 6 months ago and iOS not even 2 years ago.
Score: 7 Votes (Like | Disagree)
AMTYVLE Avatar
91 months ago
Didn't know this. I hardly use the Search function on iOS. Thanks for this handy information!

....I also just found out the other day the Notes app can act as a document scanner. I told a bunch of people this when I found out, and they also didn't know. Apple should promote these functions more than they do.
Score: 5 Votes (Like | Disagree)
IJ Reilly Avatar
91 months ago

[LIST=1]
* Tap the search field if it isn't already active, and begin typing the word that you want to define.

You aren't defining the word, the dictionary is defining the word. You are looking up the definition.

And that's the definition of define. You could look it up.
Score: 5 Votes (Like | Disagree)
Aluminum213 Avatar
91 months ago
These how to guides are becoming spam when you have nothing else to report. Keep all this in one section so it doesn’t mix with actual rumors and news
Score: 5 Votes (Like | Disagree)
sully54 Avatar
91 months ago
I wish Apple would expand the dictionary on iOS to include a thesaurus like it does in macOS.
Score: 4 Votes (Like | Disagree)

Popular Stories

AirPods Pro 3 Mock Feature

AirPods Pro 3 Just Months Away – Here's What We Know

Friday April 18, 2025 5:16 am PDT by
Despite being more than two years old, Apple's AirPods Pro 2 still dominate the premium wireless‑earbud space, thanks to a potent mix of top‑tier audio, class‑leading noise cancellation, and Apple's habit of delivering major new features through software updates. With AirPods Pro 3 widely expected to arrive in 2025, prospective buyers now face a familiar dilemma: snap up the proven...
iphone 16 pro models 1

17 Reasons to Wait for the iPhone 17

Thursday April 17, 2025 4:12 am PDT by
Apple's iPhone development roadmap runs several years into the future and the company is continually working with suppliers on several successive iPhone models simultaneously, which is why we often get rumored features months ahead of launch. The iPhone 17 series is no different, and we already have a good idea of what to expect from Apple's 2025 smartphone lineup. If you skipped the iPhone...
ipad air windows 11 arm

M2 iPad Air Runs Windows 11 ARM via Emulation, Thanks to EU Rules

Tuesday April 22, 2025 5:01 am PDT by
A developer has demonstrated Windows 11 ARM running on an M2 iPad Air using emulation, which has become much easier since the EU's Digital Markets Act (DMA) regulations came into effect. As spotted by Windows Latest, NTDev shared an instance of the emulation on social media and posted a video on YouTube (embedded below) demonstrating it in action. The achievement relies on new EU regulatory...
iphone 17 air dummy unbox therapy

iPhone 17 Air's Extreme Thinness Demoed in New Video

Tuesday April 22, 2025 10:22 am PDT by
Apple plans to release an all-new super thin iPhone this year, debuting it alongside the iPhone 17, iPhone 17 Pro, and iPhone 17 Pro Max. We've seen pictures of dummy models, cases, and renders with the design, but Lewis Hilsenteger of Unbox Therapy today showed off newer dummy models that give us a better idea of just how thin the "iPhone 17 Air" will be. The iPhone 17 Air is expected to be ...
iOS 18

iOS 18.5 Includes Only a Few Changes So Far

Monday April 21, 2025 11:00 am PDT by
Apple seeded the third beta of iOS 18.5 to developers today, and so far the software update includes only a few minor changes. The changes are in the Mail and Settings apps. In the Mail app, you can now easily turn off contact photos directly within the app, by tapping on the circle with three dots in the top-right corner. In the Settings app, AppleCare+ coverage information is more...
maxresdefault

iPhone 17 Pro Launching Later This Year With These 12 New Features

Sunday April 13, 2025 7:52 am PDT by
While the iPhone 17 Pro and iPhone 17 Pro Max are not expected to launch until September, there are already plenty of rumors about the devices. Subscribe to the MacRumors YouTube channel for more videos. Below, we recap key changes rumored for the iPhone 17 Pro models as of April 2025: Aluminum frame: iPhone 17 Pro models are rumored to have an aluminum frame, whereas the iPhone 15 Pro and ...
Beyond iPhone 13 Better Triad

Apple's 20th Anniversary iPhone May Finally Go All Screen

Tuesday April 15, 2025 6:31 am PDT by
Apple is preparing a "bold" new iPhone Pro model for the iPhone's 20th anniversary in 2027, according to Bloomberg's Mark Gurman. As part of what's being described as a "major shake-up," Apple is said to be developing a design that makes more extensive use of glass – and this could point directly to the display itself. Here's the case for Apple releasing a truly all-screen iPhone with no...
CarPlay Hero

Apple Releases Wireless CarPlay Fix

Wednesday April 16, 2025 11:28 am PDT by
If you have been experiencing issues with wireless CarPlay in your vehicle lately, it was likely due to a software bug that has now been fixed. Apple released iOS 18.4.1 today, and the update's release notes say it "addresses a rare issue that prevents wireless CarPlay connection in certain vehicles." If wireless CarPlay was acting up for you, updating your iPhone to iOS 18.4.1 should...