Complacent vs Smug

When to use each in English, with meaning, register, and examples.

Complacent

Top 5,000 (fairly common)B1adjective

Smug

Top 5,000 (fairly common)
 ComplacentSmug
Pronunciation🇬🇧 //kəmˈpleɪsənt//🇺🇸 //kəmˈpleɪsənt//🇬🇧 //smʌg//🇺🇸 //smʌg//
MeaningFeeling satisfied with oneself and not wanting to change.Feeling very pleased with yourself, often in a way that annoys others.
ExampleHis complacent attitude towards the project worried his team.He wore a smug expression after winning the debate.
RegisterNeutralNeutral
How commonTop 5,000 (fairly common)Top 5,000 (fairly common)
CEFR levelB1-
Part of speechadjective
Collocationscomplacent attitude, complacent behavior, complacent mindsetsmug smile, smug attitude, smug look, smug feeling, smug superiority
Antonymsdissatisfied, active, concernedhumble, modest
Common mistakesConfused with 'complacency' as a verb., Using it in positive contexts instead of negative.Confusing with 'snug', which means comfortable or tightly fitted., Using it in a positive sense instead of negative., Mispronouncing as 'smug' instead of the correct pronunciation.
Usage notesUse 'complacent' to describe someone who is overly confident and content, often to the point of ignoring potential dangers. Avoid when discussing humility or anxiety.Used to describe someone who is overly self-satisfied, often in a dismissive or irritating manner. Suitable for informal and formal contexts, but avoid in very casual speech.

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Smug

Frequently asked questions: Complacent vs Smug

What's the difference between Complacent and Smug?

Complacent: Feeling satisfied with oneself and not wanting to change. Smug: Feeling very pleased with yourself, often in a way that annoys others.

Can you show an example of each?

Complacent: His complacent attitude towards the project worried his team. Smug: He wore a smug expression after winning the debate.

Can I use Complacent and Smug interchangeably?

Not always. Complacent and Smug are related and overlap in some contexts, but they differ in register, how common they are, and usage, so swapping one for another can change the meaning or tone. Check the differences above before substituting.