earnest

earnest — adjective

1. showing such deep gravity that you take every matter seriously and rarely find a

1.adjectiveB2
Definition

showing such deep gravity that you take every matter seriously and rarely find any reason to smile or laugh at your own actions.

Example

Theo kept an earnest expression during the comedy show his friends had dragged him to.

earnest expression — fixed serious look

Aiko's earnest dedication to recycling impressed the town council members greatly.

Common collocations
  • earnest expression
  • earnest tone
  • earnest face
  • earnest young man
Synonyms
  • solemn

    suggests formal gravity, while 'earnest' emphasises personal conviction

  • grave

    more intense and often tied to serious consequences; less about personal attitude

  • humourless

    highlights the inability to find things funny, which is only part of this sense

Antonyms
  • frivolous

    opposite of showing serious intent

  • playful

    opposite of the humourless quality in this sense

Grammar Patterns

earnest + noun

be earnest

Usage Note

Often carries a mild negative tone, suggesting the person takes matters too seriously or lacks a sense of humour. Distinguished from sense 2 (SINCERE) by this critical overtone.

Common Mistakes

He is earnest about his hobby, so he never plays games.
He is very serious about his hobby, so he never plays games.
'earnest' implies a deeper, more solemn commitment than just 'serious about a hobby.'

2. showing a genuinely serious and heartfelt attitude, without any pretence or desi

2.adjectiveB2
Definition

showing a genuinely serious and heartfelt attitude, without any pretence or desire to deceive.

Example

Priya offered her earnest thanks to the volunteers who rebuilt the village library.

earnest thanks — sincere gratitude

Rohan made an earnest promise to take care of his sister while their parents were away.

Common collocations
  • earnest wish
  • earnest plea
  • earnest desire
  • earnest hope
Synonyms
  • sincere

    very close; 'sincere' focuses on honesty, 'earnest' on intensity of feeling

  • heartfelt

    emphasises emotional depth; slightly more informal

  • devout

    suggests religious or deeply held conviction; narrower scope

Antonyms
  • insincere

    direct opposite: pretending rather than genuinely feeling

  • half-hearted

    lacks the full commitment this sense describes

Grammar Patterns

earnest + noun

be earnest in/about + noun/gerund

Usage Note

Unlike sense 1 (SOLEMN), this sense carries a clearly positive or neutral tone — it conveys genuine sincerity without the implication of being overly grave.

Common Mistakes

She made an earnest effort to find the book' (when the effort was simply diligent).
She made a sincere effort to find the book.
'earnest' is stronger and implies deep emotional commitment, not just diligence.

3. with a higher level of effort, energy, or commitment than before, especially aft

3.adjectiveB2
Definition

with a higher level of effort, energy, or commitment than before, especially after a period of preparation or low activity.

Example

Once the rainy season ended, construction on the new school began in earnest.

began in earnest — started with full effort

Nadia started studying in earnest after her teacher explained how important the exam was.

Common collocations
  • begin in earnest
  • start in earnest
  • work in earnest
  • under way in earnest
Synonyms
  • seriously

    more general; 'in earnest' emphasises increased intensity after a build-up

  • with full force

    more informal and dramatic; similar meaning

  • wholeheartedly

    focuses on enthusiasm rather than effort intensity

Antonyms

Grammar Patterns

begin/start/get under way + in earnest

be in earnest

Usage Note

This is a fixed phrase that functions adverbially. The headword 'earnest' here is part of the compound 'in earnest' and cannot be modified or separated. Do not write 'in very earnest' or 'in earnest manner.'

Common Mistakes

She began to study in very earnest.
She began to study in earnest.
'in earnest' is a fixed phrase that does not take modifiers.

4. used to introduce or emphasise a statement that you want the listener to accept

4.adjectiveC1
Definition

used to introduce or emphasise a statement that you want the listener to accept as completely honest and without any trace of humour.

Example

I tell you in all earnestness, Tomás, that your idea could change how we teach music in schools.

in all earnestness — emphasising honesty

In all earnestness, the mayor admitted that the city needed safer bike lanes immediately.

Common collocations
  • say in all earnestness
  • ask in all earnestness
  • tell someone in all earnestness
Synonyms
Antonyms
  • jokingly

    opposite intention — saying something without serious intent

  • half in jest

    partly not serious, which is the opposite of this phrase

Grammar Patterns

in all earnestness + comma + clause

clause + comma + in all earnestness

Usage Note

This is a formal set phrase. Use it when you need to convince someone you are not joking. The shorter 'in earnest' (sense 3) does not carry this 'I am being honest' meaning; 'in all earnestness' does.

Common Mistakes

In earnestness, I think we should leave now.
In all earnestness, I think we should leave now.
the full phrase requires 'all.'
Idioms

Starting to do something with serious effort and determination.

After months of planning, the construction work began in earnest on Monday.

Maya studied in earnest for her final exams, ignoring all distractions.

earnest — noun

Word family

  • earnestly
    adverbB2
  • earnestness
    nounC1

Synonym discussion

Sense: adjective/2

All four words describe a lack of lightness, but they differ in scope and connotation. 'Serious' is the broadest term — it covers everything from a serious illness to a serious conversation, without implying emotional depth. 'Sincere' focuses on honesty and absence of deceit; you can be sincere about something trivial. 'Solemn' carries a formal, almost ceremonial gravity — a solemn promise feels weightier because of the occasion, not necessarily because of personal conviction. 'Earnest' sits between 'serious' and 'sincere': it adds the idea of deep personal commitment and emotional intensity. For example, a student could be serious about passing an exam, sincere when apologising for being late, solemn during a graduation ceremony, but earnest about pursuing a career in medicine — the last implies real personal dedication that goes beyond the situation.

Common collocations

Nouns

  • earnest money
  • earnest prayer
  • earnest request
  • earnest wish
  • earnest expression

Adverbs

  • deadly earnest
  • perfectly earnest
  • quite earnest

Phrases

  • in all earnestness
  • in deadly earnest
  • in real earnest

Prepositions

Etymology

Proto-GermanicOld EnglishMiddle EnglishEnglish

The word comes from Old English 'eornoste' meaning 'serious, zealous,' which itself comes from a Proto-Germanic root '*ernustuz' carrying the sense of 'vigour, struggle.' The noun meaning 'deposit' or 'pledge' (sense 3) developed separately from a different Old French root 'ernes' (a variant of 'arres' meaning 'earnest money'), which traces back to Latin 'arra' ('pledge'). Over time the two strands — the serious-attitude strand and the deposit strand — converged under the same spelling in Middle English.