irregular changes

[ɪˈrɛɡjələr ˈtʃeɪndʒɪz]
noun
mudanças irregulares
1. Alterations or modifications that do not follow a consistent pattern, rule, or expected sequence
The irregular changes in the weather made it difficult to plan outdoor activities.
As mudanças irregulares no clima tornaram difícil planejar atividades ao ar livre.
2. In grammar, modifications to word forms that deviate from standard conjugation or declension patterns
English irregular verbs like 'go' and 'eat' show irregular changes in their past tense forms.
Verbos irregulares em inglês como 'go' e 'eat' mostram mudanças irregulares em suas formas de tempo passado.
3. Fluctuations or variations in data, trends, or measurements that lack predictability
The stock market experienced irregular changes throughout the trading day.
O mercado de ações experimentou mudanças irregulares ao longo do dia de negociação.
This term is commonly used in academic, scientific, and business contexts in both Brazilian and American English. In Brazil, it's frequently employed in weather reports, economic analyses, and grammar instruction. The concept of 'irregular changes' is particularly important in Portuguese language teaching, where irregular verbs (verbos irregulares) represent a significant learning challenge for English speakers.
Synonyms / Sinônimos
unpredictable changeserratic variationsanomaliesdeviationsfluctuations
Antonyms / Antônimos
regular changesconsistent modificationspredictable variationsuniform patterns

Regional Variations

General Brazilian
mudanças irregulares
Most common and widely understood term across Brazil
São Paulo
mudanças irregulares / variações anômalas
Formal and business contexts may use 'variações anômalas'
Rio de Janeiro
mudanças irregulares / mudanças esquisitas
Colloquially may use 'mudanças esquisitas' (strange changes)
Portugal
alterações irregulares / mudanças irregulares
Both terms accepted; 'alterações' more formal in European Portuguese

Related Words

irregular verbsanomalous behaviorerratic patternsdeviationinconsistencyvariation

Related Idioms & Phrases

out of the ordinary
against the grain
breaking pattern
throwing a curveball
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