Mild vs Slight

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

Mild

Top 2,000 (common)B1adjective

Slight

Top 2,000 (common)B2adjective
 MildSlight
Pronunciation🇬🇧 /["/maɪld/"]/🇺🇸 /["/maɪld/"]/🇬🇧 /["/slaɪt/"]/🇺🇸 /["/slaɪt/"]/
MeaningNot strong or intense; gentle.A little bit or small in amount.
ExampleThe weather today is quite mild for this time of year.There was a slight delay in the train schedule due to maintenance work.
RegisterNeutralNeutral
How commonTop 2,000 (common)Top 2,000 (common)
CEFR levelB1B2
Part of speechadjectiveadjective
Collocationsbe, seem, extremely, fairly, very, be, become, turn, extremely, fairly, very, be, sound, seemingly, deceptively, meek and mildappear, be, seem, extremely, fairly, very, the slightest of…, be, look, very, physically
Antonymsharsh, severe, strongsignificant, substantial, considerable
Common mistakesConfused with 'wild' in describing behavior., Used incorrectly to describe very strong flavors or emotions.Confusing with 'slighted' which means to insult someone., Using 'slight' to describe something very large instead of small., Mixing up 'slight' with 'light' regarding weight.
Usage notesUsed to describe things that are not harsh or severe, like weather, food, or personality traits. It can be appropriate in both casual and formal contexts.Use 'slight' to describe something that is not much or only a little. It is appropriate in both formal and informal contexts but is less common in very casual speech.

Frequently asked questions: Mild vs Slight

What's the difference between Mild and Slight?

Mild: Not strong or intense; gentle. Slight: A little bit or small in amount.

Are Mild and Slight the same CEFR level?

Mild: B1, Slight: B2 on the CEFR scale.

Can I use Mild and Slight interchangeably?

Not always. Mild and Slight 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.