declension
/dɪˈklenʃn/ (bre, ipa) · /dɪˈklenʃn/ (ame, ipa) · /di-ˈklen(t)-shən/ (ame, mw)
declension — noun
- declensionsingular
- declensionsplural
1. In grammar, a set of nouns, pronouns, or adjectives that all follow the same pat
In grammar, a set of nouns, pronouns, or adjectives that all follow the same pattern when their endings change to show case (such as subject or object), number (singular or plural), or gender.
In Latin, most feminine nouns belong to the first declension and share the same case endings.
belong to the first / second / third declension — typical structure
The teacher asked the students to memorise the endings for the third declension by Friday.
German has four noun declension patterns, and knowing which one a word follows helps with adjective agreement.
Dr. Okafor explained that each Latin declension has its own nominative, accusative, and genitive endings.
Once you learn which declension a noun belongs to, you can predict its form in every grammatical case.
- inflection class
more general term; works for any language, while 'declension' is specific to nouns, pronouns, and adjectives
- paradigm
refers to the full set of forms of one word, not the group of words that share a pattern
用法筆記
Often paired with ordinal numbers (first declension, second declension) to name specific inflection classes in languages such as Latin, Greek, German, and Russian.
常見錯誤
2. The system or act of changing a noun, pronoun, or adjective form according to it
The system or act of changing a noun, pronoun, or adjective form according to its grammatical role in a sentence — for example, altering the ending from a subject form to an object form.
The declension of the Latin word 'puella' produces six different forms, one for each grammatical case.
declension of + [word] — refers to the full set of forms for one item
In her grammar workbook, Mei studied the declension of Russian nouns by writing out all six case forms.
The declension of adjectives in this language must match the gender and number of the noun they describe.
Students often find noun declension difficult because it requires memorising many different suffixes at once.
The language app included a chart showing the full declension of the German word 'der Hund' across all four cases.
- inflection
broader term covering verbs (conjugation) and nouns (declension), and also including changes like tense marking
- paradigm
the complete table of forms for one word; 'declension' more often refers to the system itself
用法筆記
Uncountable when referring to the process or system in general ('Noun declension is part of the grammar'). Countable when referring to the set of forms of one word ('the declension of this noun').
常見錯誤
3. A formal term used in medical contexts for the gradual worsening of a patient's
A formal term used in medical contexts for the gradual worsening of a patient's health or the progressive advance of a disease over a period of time.
The doctor noted a steady declension in the patient's kidney function over the past six months.
declension in + [bodily function/condition] — typical medical pattern
Despite the new medication, the declension of Mrs. Yoshida's lung condition continued with no sign of improvement.
Dr. Patel warned the family about the possible declension of the disease if the patient stopped treatment.
The medical report described a gradual declension in cognitive abilities after the second stroke.
A rapid declension in liver function forced the doctors to place the patient on the transplant waiting list.
- deterioration
the standard everyday word; 'declension' is far more formal and restricted to medical writing
- decline
broader and more natural than 'declension' for describing a patient's worsening state
- improvement
opposite direction — the patient's condition getting better
- remission
a temporary or permanent decrease in disease severity
用法筆記
Far less common in everyday English than synonyms like 'deterioration' or 'decline'. Almost exclusively found in formal medical notes, journal articles, or case reports.