Check out

• Take a look / explore → look at, try, explore
• Leave a hotel (opposite of check in)
• Verify / turn out to be true (intransitive) → “the numbers check out”
• Borrow from a library (AmE)
• Stop paying attention (informal, about people)
• Check someone out (informal — look at with interest)

• “Check out this new library!”
• “Let’s check out the new restaurant tonight.”
• “We checked out of the hotel at 11.”
• “His alibi checks out.”
• “Check out the PR when you get a chance.”

• “The checkout page keeps crashing.”
• “We added one-click checkout.”
• “Hotel checkout is at noon.”
• “There was a long line at the checkout.”
• “Most drop-offs happen at checkout.”

• “the checkout counter”
• “checkout time is 11 AM”
• “the checkout process”
• “a bright checkout button”
• “checkout flow optimization”

The verb is two words (check out); the noun and adjective are one word (checkout, the checkout page).

• “Check out this new framework!” (take a look)
• “You should check out that coffee shop.” (go and try it)

• “We need to check out by 11 AM.” (leave / vacate the room)
• “Checkout time is noon.” (noun)

• “His story checks out.” (it was confirmed)
• “The numbers check out.” (they add up)
• “I verified the license — it checks out.” (all clean)

• “I checked out three books from the library.” (borrowed them)

• “By the last hour of the meeting, everyone had checked out.” (tuned out)
• “He mentally checked out of the job months ago.” (gave up on it)

• “That guy was totally checking you out.” (giving you admiring looks 😄)

• check out the repo / check the repo out ✅
• check it out ✅ / check out it ❌

• “The bug is on the checkout page.” (the purchase page)
• “Express checkout with Apple Pay.”
• “Hotel checkout is at 11.”

• “git checkout feature/auth” — switch branch; “Check out the main branch and pull the latest.”
• “Check out the PR when you have a minute.” (take a look)
• “I tested the payment flow — everything checks out.” (works as intended)
• “Check out the docs before asking — the answer’s usually there.”
• “The checkout flow needs Stripe integration.” (the payment process)
• “Check out this trick I found for optimizing the query.”

• “Check out my new setup!” (come look at my desk)
• “We checked out of the hotel and headed to the airport.”
• “Let’s check out that new gym near the office.” (go and see)
• “I checked out the apartment before signing the lease.” (inspected)
• “The landlord’s references checked out, so we signed.” (were confirmed)

• “Check out the staging link when you get a chance: …” ✅ (a bit informal; for formal clients: “Please take a look at…”)
• “I’ve reviewed the requirements — everything checks out, starting today.”
• “Check out the demo video I recorded for this milestone.” (great for Loom walkthroughs)
• “Fixed the checkout page bug — cart totals now calculate correctly.”

• check out X — take a look (recommendation, enthusiasm)
• check X — verify (neutral, a task)
• check on X — look at the status
• look into X — investigate more deeply
• try out X — try in practice

“Check out” meaning “take a look” is casual-friendly — perfect in Slack and with clients you’re on first-name terms with. In a formal email prefer please review or please take a look at.

Mnemonic: check in = you enter (a hotel, a channel, a process); check out = you leave (a hotel, your attention) or pull something out to inspect it (a repo, a book, a PR). In → inward, out → outward. 👌