Hear it aloud
Tap the speaker for text-to-speech pronunciation, or copy the headword to the clipboard in a single click.
Russian, for the curious reader
Read Russian,
one hover at a time.
Perev turns any Russian word on the web into an instant dictionary card. Stress, transliteration, and English glosses appear the moment your mouse drifts over the text. No tabs, no typing, no lookups.
Add to Firefox
Free & open source · Chrome coming soon
Everything on hover.
Difficulty at a glance
Know how hard a word is.
Every entry wears a CEFR badge from A1 to C2 and a frequency rank, so you instantly know whether a word is everyday vocabulary or something to jot down.
Declension
Nouns & adjectives, every case.
Flip to the case table and see all six cases across singular and plural at once, so there's no scrolling off to another site and no guessing which ending goes where.
Conjugation
Verbs, fully conjugated.
Present/future and past sit side by side, with the imperative and gerund tucked underneath. The whole verb at a glance, right where you're reading.
Inflections, solved
It reads the tricky forms.
Hover a busy inflected form like читал and Perev traces it back to its dictionary form, then tells you exactly what you're looking at: past · masculine.
And the finishing touches.
Jump to your sources
One-click links straight to Wiktionary, Yandex, OpenRussian and Reverso Context for the word under your cursor.
Dark & light
Matches how you read, with a per-site toggle and a transliteration switch for when you want the Cyrillic to stand on its own.
100% offline
All ~87,000 headwords and a million inflected forms are bundled locally. No accounts, no servers, no tracking, ever.
Add it in one click.
Install from Firefox Add-ons, then click the toolbar button to switch hover lookup on. That's the whole setup.
Add to FirefoxChrome & Firefox for Android support is on the way.