Inglês

spontaneously

gb/spɑntˈeɪniəsli/ us/spɑntˈeɪniəsli/
B2 Inglês
Acepções
0 acepção
adverb B2 property
1

without planning or prompting

without planning it first

Padrão de uso: [someone] [does something] spontaneously
Erro comum:
Often confused with simultaneously (“at the same time”) or instantaneously (“immediately”).
Sinônimos
impulsively (Emphasizes acting on impulse, sometimes without thinking.) | unprompted (Highlights that no one encouraged or asked for it.) | on the spur of the moment (More idiomatic; stresses sudden decision-making.) | naturally (Suggests it felt genuine, not forced.)
Antônimos
deliberately (Done intentionally and with thought or planning.) | planned (Arranged in advance.) | reluctantly (Done with hesitation rather than freely.)
Colocações
spontaneously decide |spontaneously agree |spontaneously offer |spontaneously volunteer |spontaneously laugh |spontaneously smile |spontaneously clap |spontaneously kiss |spontaneously invite |spontaneously start talking
Temas
daily_life |communication |emotions
Exemplos
  • We spontaneously decided to take a weekend trip to the coast.
  • When the singer walked on stage, the crowd spontaneously started cheering.
  • She spontaneously offered to help me carry the boxes.
Exemplos para estudantes
  • I spontaneously bought tickets for the concert.
  • He spontaneously laughed at the joke.
adverb technical C1 process
2

by itself, without outside cause

happening by itself, without help

Padrão de uso: [something] happens spontaneously
Erro comum:
In technical contexts, it does not necessarily mean “fast”; it means “without an external trigger.”
Sinônimos
automatically (Often implies a mechanism or system; not always “without a cause.”) | by itself (Plain, informal way to express the same idea.) | naturally (Can imply it happens without intervention, especially in biology/medicine.)
Antônimos
induced (Brought about by an outside cause or treatment.) | triggered (Started by a specific event or action.) | artificially (Caused by human action rather than occurring on its own.)
Colocações
occur spontaneously |arise spontaneously |develop spontaneously |resolve spontaneously |heal spontaneously |mutate spontaneously |spontaneously combust |spontaneously ignite |spontaneously generate |spontaneously form
Temas
science |health |technology
Exemplos
  • Some cancers can develop spontaneously, without a clear environmental trigger.
  • The rash cleared up spontaneously after a few days.
  • In chemistry, a reaction may proceed spontaneously if conditions are favorable.
Exemplos para estudantes
  • The problem went away spontaneously.
  • The fire started spontaneously.
Gramática
Forma no dicionário
spontaneously
AFI
GB/spɑntˈeɪniəsli/
US/spɑntˈeɪniəsli/
Sílabas e tonicidade
spon - tan - eously (3 sílabas)
Stress on 2nd syllable (tan)
Formas da palavra
Noun
  • Base: spontaneously
  • Plural: spontaneouslies
Expressões

spontaneously arise

1
/spɑntˈeɪniəsli ɚˈaɪz/
fixed phrase formal

appear without planning or cause

to appear by itself

Exemplos
  • Conflicts rarely resolve spontaneously; they usually need effort.
  • New ideas can spontaneously arise during a conversation.
  • A problem may spontaneously arise when the system is under stress.

spontaneously break into applause

1
/spɑntˈeɪniəsli bɹˈeɪk ˈɪntu əplˈɔz/
fixed phrase

suddenly start clapping

to start clapping suddenly

Exemplos
  • The audience spontaneously broke into applause at the end of the speech.
  • When she finished the last note, the hall spontaneously broke into applause.
  • The room spontaneously broke into applause as he accepted the award.

spontaneously combust

1
/spɑntˈeɪniəsli kəmbˈʌst/
fixed phrase technical

catch fire by itself

to start burning by itself

Exemplos
  • The oil-soaked rags can spontaneously combust if they’re left in a pile.
  • In the movie, the villain claims the device will spontaneously combust.
  • The report found no evidence that the materials could spontaneously combust under normal conditions.

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