Case Endings in Fixed Phrases

Modern Dutch has largely abandoned the four-case system (Nominative, Genitive, Dative, Accusative). While many historical forms survive only as fossilized vocabulary, certain rules like the genitive -s and partitive genitive remain productive in modern Dutch. Learners should distinguish between these active rules and the fixed phrases that must be learned as units.

1. The Dative (Historical Indirect Object)
Fossilized dative remnants appear within fixed prepositional phrases. These forms are now single, indivisible units.

• Ten: A fixed form derived from te + den (masculine/neuter dative). It is found in phrases like ten tijde van (at the time of). Note the spelling nuance: ten einde (at an end) is usually written as two words, whereas the formal conjunction teneinde (in order to) is written as one.
• Ter: A fixed form derived from te + der (feminine dative). It is used in phrases like ter plaatse (at the scene) and ter wereld (in the world). While historically feminine, it appears in fossilized exceptions with masculine nouns, such as ter dood veroordelen.
• Noun Suffixes (-e): Many dative remnants preserve an archaic -e ending on the noun itself, such as ten huize van (at the house of) or ten dienste van (in service of).
• Shared Dative/Accusative Remnants: Some formal phrases preserve the -en ending for masculine singular nouns. While bij deze is a common modern alternative to bij dezen, the form in dezen (meaning "in this matter") remains the strictly preferred formal version over in deze.
• Adjectives: Case endings also appear on adjectives in fixed phrases, such as the feminine dative -er in te goeder trouw (in good faith) and the masculine/neuter dative -en in ten langen leste (at long last).

2. The Genitive (Bezittelijke vorm)
The genitive indicates possession, time, or manner. Unlike other remnants, two specific uses remain productive.

• Productive -s: The genitive -s remains productive when indicating possession with proper names, such as Pieters boek.
• Partitive Genitive: This is a common productive remnant where an adjective following iets, niets, veel, weinig, wat, or genoeg takes an -s ending, as in iets moois or wat nieuws.
• Fossilized Genitive (des/der): The article des (masculine/neuter) and der (feminine/plural) are found only in fixed titles or idioms, such as Koninkrijk der Nederlanden. The noun often takes a corresponding -(e)s suffix, as in des duivels (furious). The shortened 's used in time expressions like 's morgens is a direct contraction of this archaic article des.
• Adverbial Genitive: An -s is often found in fixed adverbs of direction or manner, such as links (left) or blootsvoets (barefoot).

3. Register and Usage
While most noun-based case remnants are highly formal or archaic, Dutch still maintains a functional case system in its personal pronouns (e.g., hen vs hun). Using archaic noun cases in casual conversation sounds 'oubollig' (stuffy), but they remain essential for legal and administrative precision.