English Idioms in Use (listed as idioms-in-use.com) is a free reference site aimed at intermediate ESL/EFL learners. According to the catalogue description, it provides a comprehensive idiom reference paired with practice exercises — meaning it is more than just a list of idioms with definitions.

Idiom reference sites sit in a specific niche: learners past the beginner plateau who can already form correct sentences but still sound stiff because they default to literal English. Resources like this one fill the gap between a basic vocabulary list and a full idiomatic-English course.

The site is positioned for self-study. Learners can browse, read an example, and (if exercises are present) test themselves without needing a teacher in the loop.

Important: as of our last check, the listed domain did not resolve from every network. Treat this as an archived or possibly inactive resource. We are keeping the page live for SEO because the catalogue still references it, but verify the URL works for your class before assigning it.

Even with a thin catalogue entry, the use cases are clear for an idiom reference site at this level:

• Weekly idiom homework: assign 5 idioms per week. Students write one original sentence per idiom. Review in class.
• Speaking warm-ups: pick one idiom per class. Elicit meaning, then ask students to use it in a mini-conversation.
• Vocabulary expansion units: build a 4-week unit around animal idioms, weather idioms, body idioms, business idioms. This kind of site gives you the raw list to organize.
• Translation practice: ask students to translate each idiom into their L1 and back. Highlights why idioms are untranslatable.
• Cultural notes: pair idioms with short discussions on cultural context. Why does English use animals (a bull market) where other languages use other metaphors?

For teachers who run conversation-focused classes, an idiom list is one of the cheapest and highest-impact resources you can hand out. Learners feel immediate progress in naturalness.

Verdict: useful as a concept, uncertain as a live resource. The catalogue description is plausible and matches a clear learner need — idioms with examples and exercises. But the listed domain does not consistently resolve, so we cannot confirm the actual content, design, or current activity of the site.

If you are reading this in the catalogue before assigning work, do a quick URL check first. If it loads, it is a free, no-signup reference that fits naturally into conversation or vocabulary units for B1–B2 learners. If it does not load, use the alternatives below — they cover the same need with verified active URLs.

Honest recommendation: bookmark the alternatives (The Idioms, UsingEnglish.com, ESL Brains) as your primary idiom resources. Revisit English Idioms in Use only if the domain is restored.