The term "weak declension" refers to the grammatical pattern of inflection used in certain languages, whereby nouns, adjectives, and pronouns are altered to indicate case, gender, or number. Antonyms for this term could include "strong declension," "irregular declension," "variable declension," or "uninflected." These terms describe other patterns of inflection that may be used in different languages or different parts of speech. A strong declension, for example, involves more significant changes to the form of a word, while an irregular or variable declension may follow a more unpredictable pattern. An uninflected word, meanwhile, does not change form according to case, gender, or number.