What does acquis mean?
Acquis is a noun borrowed from French that refers to the accumulated body of laws, regulations, court judgments, and shared political principles built up by the European Union over time. In practice, the term appears most often in the set phrase 'the acquis communautaire', which denotes everything a country must adopt in order to join the EU — from single-market rules to environmental standards. Candidate states undergo detailed screening of the acquis chapter by chapter during accession negotiations, and new members are expected to have transposed it into their national law by the day they enter. The word carries a formal, institutional register and is encountered mainly in journalism about Brussels, legal scholarship, and political science. Its root is the Latin verb acquīrere, 'to acquire', making it a distant relative of the everyday English words 'acquire' and 'acquisition'. Though narrow in scope, acquis is indispensable vocabulary for anyone following European politics.
nounThe accumulated body of laws, rules, court decisions, and political principles that a country joining the European Union must accept and implement; used chiefly in the phrase 'the acquis' or 'the acquis communautaire'.
- The full body of European Union law, legislation, and shared principles that member states and candidate countries are bound to accept.
"Before accession, the candidate state had to transpose the entire acquis into its national legislation."
"Negotiators spent years reviewing each chapter of the acquis before enlargement."
"New members must demonstrate that they can apply the acquis effectively from the day of accession."
It's one of the few French words that entered English purely through Brussels bureaucracy — an entire legal universe compressed into two syllables.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Etymology of acquis
Acquis comes directly from French acquis, the past participle of acquerir ('to acquire'), which descends from the Latin verb acquīrere, formed from ad- ('toward') + quaerere ('to seek'). The term entered English usage in the late twentieth century through the language of European Community law, where 'l'acquis communautaire' named the growing stockpile of community legislation. It shares its Latin root with the English words 'acquire', 'acquisition', and 'acquest'.
How acquis is actually used
A formal, technical term used almost exclusively in discussions of European Union law, enlargement negotiations, and political science. It is nearly always preceded by 'the' and frequently appears in the fuller French form 'acquis communautaire'. Outside EU contexts it would sound obscure.
Easily confused with acquis
'Acquit' is a verb meaning to declare someone free of a legal charge, while 'acquis' is a noun denoting the accumulated body of EU law and principles.