Consistent vs Reliable vs Steady vs Uniform

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

Consistent

Top 2,000 (common)B2adjective

Reliable

Top 1,000 (very common)B1adjective

Steady

Top 1,000 (very common)B2adjective

Uniform

Top 2,000 (common)A2noun
 ConsistentReliableSteadyUniform
Pronunciation🇬🇧 /["/kənˈsɪstənt/"]/🇺🇸 /["/kənˈsɪstənt/"]/🇬🇧 /["/rɪˈlaɪəbl/"]/🇺🇸 /["/rɪˈlaɪəbl/"]/🇬🇧 /["/ˈstedi/"]/🇺🇸 /["/ˈstedi/"]/🇬🇧 /["/ˈjuːnɪfɔːm/"]/🇺🇸 /["/ˈjuːnɪfɔːrm/"]/
MeaningAlways happening in the same way or showing the same quality.Someone or something you can trust to work well or be true.Not changing; stable.The same clothes worn by a group of people.
ExampleHer performance has been consistent throughout the year, earning her the top spot in the competition.You can always count on her; she is very reliable.She has a steady job that provides her with financial security.Every student at the school is required to wear a uniform.
RegisterNeutralNeutralNeutralNeutral
How commonTop 2,000 (common)Top 1,000 (very common)Top 1,000 (very common)Top 2,000 (common)
CEFR levelB2B1B2A2
Part of speechadjectiveadjectiveadjectivenoun
Collocationsbe, become, remain, extremely, fairly, very, be, become, remain, extremely, fairly, very, appear, be, seem, completely, entirely, fully, across, among, between, appear, be, seem, completely, entirely, fully, across, among, betweenbe, prove, seem, extremely, fairly, very, as, be, prove, seem, extremely, fairly, very, asbe, seem, become, remarkably, very, fairly, be, feel, look, extremely, fairly, veryfull, smart, regulation, don, be dressed in, in (a/​the) uniform, out of uniform, full, smart, regulation, don, be dressed in, in (a/​the) uniform, out of uniform
Antonymsinconsistent, variable, erraticunreliable, inconsistent, untrustworthyunstable, fluctuating, irregularcasual wear, civilian clothes
Common mistakesConfusing 'consistent' with 'consistent with' when discussing compatibility., Using 'consistency' incorrectly as a synonym for 'consistent'., Erroneously applying the word to describe one-time events.Using 'reliable' with a subject that can't be trusted., Confusing 'reliable' with 'reliant' which has a different meaning., Using 'reliable' to mean 'accurate' which is not the same.Confused with 'steady' vs 'stedy' - 'steady' is the correct spelling., Using 'steady' in contexts that require a more dynamic word, like 'active' or 'exciting'., Mixing up 'steady' with 'steady on' - the latter is used primarily as a command.Confused with 'unify'; they have different meanings., Used in the plural form ('uniforms') when referring to the concept more generally.
Usage notesUse 'consistent' when you want to describe something that does not change or varies little over time. It's appropriate in both casual and formal contexts, but avoid it in overly emotional or subjective discussions where 'reliable' might feel more fitting.Use 'reliable' in contexts where you want to express trustworthiness. It's suitable for both formal and informal settings, but avoid it in overly casual speech.Use 'steady' to describe something that is consistent or reliable. It’s appropriate in both casual conversations and professional contexts, but avoid using it in overly emotional situations.Used when referring to clothes that identify a specific group, like students or police. Not used for casual clothing in informal contexts.

Frequently asked questions: Consistent vs Reliable vs Steady vs Uniform

What's the difference between Consistent, Reliable, Steady, and Uniform?

Consistent: Always happening in the same way or showing the same quality. Reliable: Someone or something you can trust to work well or be true. Steady: Not changing; stable. Uniform: The same clothes worn by a group of people.

Are Consistent, Reliable, Steady, and Uniform the same CEFR level?

Consistent: B2, Reliable: B1, Steady: B2, Uniform: A2 on the CEFR scale.

What part of speech are Consistent, Reliable, Steady, and Uniform?

Consistent: adjective, Reliable: adjective, Steady: adjective, Uniform: noun.

Can you show an example of each?

Consistent: Her performance has been consistent throughout the year, earning her the top spot in the competition. Reliable: You can always count on her; she is very reliable. Steady: She has a steady job that provides her with financial security. Uniform: Every student at the school is required to wear a uniform.

Can I use Consistent, Reliable, Steady, and Uniform interchangeably?

Not always. Consistent, Reliable, Steady, and Uniform 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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