100,000 expressions & idioms Understand any expression you come accross: from corporate jargon like 🖐️ passer la main or 💪 être force de proposition to everyday expressions such as 🐘 mémoire d’éléphant or 🛍️ lèche-vitrine, as well as idioms like 🚲 avoir la tête dans le guidon, 🗣️ donner de la voix or 🏇🏻 monter sur ses grands chevaux.

40,000 images When you search for a concrete noun or object, images help you grasp the meaning at a glance. Try searching for 🧵 pied-de-poule, 🏖️ transat, 🌿 pois de senteur, 🦎 salamandre or 🔥 poêle.

Informal language & slang Everyday conversations are packed with informal expressions and slang. Meanings are clearly tagged, so you'll always know when a word is casual. Look up 🥬 (raconter des) salades, 🍭 partir en sucette, 💥 banger or 🤸 flex.

Abbreviations & acronyms Quickly decode modern abbreviations and acronyms. Stay up to date with popular abbreviations such as 🤷 TKT, 🤕 PLS, 🥊 MMA, or 👔 CSP+.

Get more than a simple definition

Translations for each meaning View translations alongside each meaning to see how a word is translated in each context. Simply toggle translations ON and choose among 25+ languages. You can also display the translation of definitions or examples into your native language to deepen your understanding.

Synonyms & related words by meaning View synonyms and related words for each meaning, not just for the word as a whole. This helps you choose the most accurate word for your context. Click the

icon to discover related terms: analogies, antonyms, common collocates, words with same roots, umbrella terms… Try with coupe or planter.

Multiple examples for every meaning Each meaning comes with three real-life examples to show you how the word is used in different contexts. Click the

icon next to the first example to see two additional options and learn to use new vocabulary naturally.

Go from understanding to mastery

Save words for later review Click the

icon to save words you want to revisit. You can also save a specific meaning by clicking on the

icon next to it. For example, you might want to save the word “mine”, which means “face” or “pencil lead”.

Practice with personalized flashcards Reverso automatically transforms your searches and saved words into personalized flashcards and quizzes, featuring high-quality audio and usage examples. This helps you transform terms you only recognize into words you actually use confidently.

Learn with Netflix, YouTube, and your favorite texts With Reverso Chrome extension, transform movies, TV shows, articles, or song lyrics into an interactive lesson. Look up words and expressions in one click on any website and learn with your favorite content.

Definition of suboptimal - Reverso French Dictionary

Adjective

Origin of suboptimal

Terms related to suboptimal

View all translations of suboptimal

Discover how Reverso redefines the dictionary

Go beyond “simple words”

Get more than a simple definition

Go from understanding to mastery