Risky vs Unstable as hell

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

Risky

Top 2,000 (common)B2adjective

Unstable as hell

InformalBeyond 10,000 (less common)
Most formal: RiskyMost common: Risky
 RiskyUnstable as hell
Pronunciation🇬🇧 /["/ˈrɪski/"]/🇺🇸 /["/ˈrɪski/"]/🇬🇧 //ʌnˈsteɪ.bəl əz hɛl//🇺🇸 //ʌnˈsteɪ.bəl æz hɛl//
MeaningSomething that can cause harm or danger.Very not strong or safe, likely to change suddenly.
ExampleLife as an aid worker can be a **risky business** *(= dangerous)*.The weather has been unstable as hell lately, changing from sun to snow in minutes.
RegisterNeutralInformal
How commonTop 2,000 (common)Beyond 10,000 (less common)
CEFR levelB2-
Part of speechadjective
Collocationsbe, look, prove, extremely, fairly, veryfeel unstable as hell, be unstable as hell, look unstable as hell
Antonymssafe, secure, certain-
Common mistakesConfused with 'risky' vs 'riskful' (the latter is not commonly used), Using 'risky' as a noun (it's an adjective), Incorrectly spelling 'risky' as 'risquee'Used in formal contexts where a more serious phrase is needed., Confused with 'unstable' alone, which may not convey the same intensity., Misplaced commas or incorrect punctuation around the phrase.
Usage notesUse 'risky' when describing actions or decisions that could lead to loss or harm. It's suitable in most contexts, but avoid it in very formal writing.Use this phrase to describe situations or objects that are unpredictable. It's informal and may not suit formal writing or discussions.

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Risky
Unstable as hell

Frequently asked questions: Risky vs Unstable as hell

What's the difference between Risky and Unstable as hell?

Risky: Something that can cause harm or danger. Unstable as hell: Very not strong or safe, likely to change suddenly.

Which is more formal: Risky and Unstable as hell?

Risky is the most formal of these.

Which is more common: Risky and Unstable as hell?

Risky is the most common in everyday English.

Can you show an example of each?

Risky: Life as an aid worker can be a **risky business** *(= dangerous)*. Unstable as hell: The weather has been unstable as hell lately, changing from sun to snow in minutes.

Can I use Risky and Unstable as hell interchangeably?

Not always. Risky and Unstable as hell 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.

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