Grondslag

Grondslag is a Dutch noun that denotes the basis, foundation, or underlying justification for something. It is used to indicate the source on which a claim, decision, or statement rests.

Etymologically, grondslag combines grond (ground, foundation) with slag (a forming element in Dutch nouns) to express the notion of a fundament or basis.

In legal and administrative contexts, grondslag refers to the factual or legal grounds for a decision, regulation, or policy. A decision must have a solid grondslag, and the motivering (the justification) often describes the grounds on which the decision rests. The term is common in phrases like grondslag van een wet or grondslag van een besluit.

In science, philosophy, and theory-building, grondslag denotes the fundamental principles, axioms, or assumptions underlying a theory or argument. It can be used to contrast with conclusions or implications that follow from those foundations.

In everyday language, grondslag can appear in expressions such as “zonder grondslag” (without a basis) to flag an unsupported claim. It is often preferred in formal or juridical writing over synonyms like basis or fundament, because it emphasizes justification and grounding.

See also: basis, fundament, onderbouwing, grond. While these terms are related, grondslag typically carries a formal tone and highlights the grounds or rationale on which something is built.