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What Is Informal Vocabulary in English?
Informal vocabulary, also called colloquial or familiar language, refers to the words and expressions people use in casual, everyday situations. It is the kind of language you hear between friends, in text messages, or in relaxed conversations. It is different from the formal language you would use in a job interview or a business email.
Think of it like clothing. Formal language is like wearing a suit. Informal language is like wearing jeans and a t-shirt. Both are correct, but you choose one depending on the situation.
Simple Examples to Get Started
- Formal: ‘I am going to rest for a while.’ / Informal: ‘I’m gonna chill for a bit.’
- Formal: ‘That is very good.’ / Informal: ‘That’s awesome!’
- Formal: ‘I do not understand.’ / Informal: ‘I have no clue.’
As you can see, the meaning is the same, but the words and the feeling are very different.
The Main Elements of Informal Vocabulary in English
Informal vocabulary is a broad topic. It includes several types of language that you will encounter every day. Let us look at the most important ones.
1. Slang
Slang refers to very informal words or phrases, often used by specific groups of people. Slang changes quickly and can vary by country, age group, or even city.
- ‘Sick’ can mean ‘amazing’ or ‘cool’ in modern English slang.
- ‘Ghosting’ means suddenly stopping all contact with someone.
- ‘Lit’ means exciting or fun. For example: ‘That party was lit!’
Be careful: slang from the United Kingdom may be different from slang in the United States or Australia.
2. Contractions and Reduced Forms
In informal speech, people often shorten words. These are called contractions. They make speech sound more natural and relaxed.
| Full Form | Contraction | Example |
|---|---|---|
| I am going to | I’m gonna | ‘I’m gonna call you later.’ |
| want to | wanna | ‘Do you wanna come?’ |
| got to | gotta | ‘I gotta go now.’ |
| kind of | kinda | ‘It’s kinda cold today.’ |
These forms are very common in spoken English but should be avoided in formal writing.
3. Idioms and Fixed Expressions
Idioms are phrases where the meaning is not literal. They are very common in informal English and can be confusing for learners.
- ‘Break a leg’ means ‘good luck’.
- ‘Hang out’ means to spend time with someone casually. Example: ‘Do you want to hang out this weekend?’
- ‘Give it a shot’ means to try something. Example: ‘I’ve never cooked Thai food, but I’ll give it a shot.’
Learning common idioms will help you sound much more natural in English conversations.
Why Informal Vocabulary Matters
You might wonder: ‘If I already know formal English, why do I need informal vocabulary?’ The answer is simple: most real-life conversations happen in informal settings.
When you watch a film, listen to a podcast, talk with native speakers, or read social media posts, you will hear informal language constantly. Without it, you may feel lost even if your grammar is perfect.
Understanding informal vocabulary also helps you:
- Connect more naturally with native speakers.
- Understand humour, jokes, and cultural references.
- Sound less robotic and more human in conversation.
- Follow fast-paced dialogue in films and TV shows.
Comparison with Other Languages
Every language has levels of formality. English is not alone. Let us compare a few examples across French, Spanish, and English.
| Context | French (informal) | Spanish (informal) | English (informal) |
|---|---|---|---|
| Saying something is great | ‘C’est trop bien !’ | ‘¡Qué guay!’ (Spain) / ‘¡Qué chévere!’ (Latin America) | ‘That’s awesome!’ |
| I don’t know | ‘J’en sais rien.’ | ‘Ni idea.’ | ‘No clue.’ / ‘Beats me.’ |
| Friend | ‘Pote’ / ‘Copain’ | ‘Tío’ / ‘Mano’ | ‘Buddy’ / ‘Mate’ / ‘Pal’ |
Just like in French or Spanish, informal English varies by region. British people say ‘mate’, while Americans prefer ‘buddy’ or ‘dude’. Being aware of these differences helps you adapt to different English-speaking environments.
A Complete Example
Here is a short informal conversation between two friends. Notice how many elements of informal vocabulary appear naturally.
Alex: ‘Hey! Wanna grab a coffee later?’
Sam: ‘Yeah, totally! I’m kinda free after 3. That new place downtown is supposed to be lit.’
Alex: ‘Cool, let’s meet there. I gotta finish some stuff first.’
Sam: ‘No worries. See you later!’
In this short exchange, you can spot: contractions (‘wanna’, ‘gotta’, ‘I’m’), slang (‘lit’, ‘cool’), and informal expressions (‘no worries’, ‘totally’). This is very typical of everyday English spoken between friends.
Key Takeaways
- Informal vocabulary includes slang, contractions, idioms, and casual expressions.
- It is used in everyday conversations, messages, films, and social media.
- It is different from formal English, which is used in professional or academic contexts.
- Knowing informal vocabulary helps you understand real English and connect with people naturally.
- Informal language varies by country and region, so stay curious and keep learning.
This is just the beginning. In the following articles in this series, we will explore specific types of informal vocabulary in more detail, including slang by theme, informal phrasal verbs, and expressions for different social situations. Stay tuned!
Sources
- Leech, G. (1983). Principles of Pragmatics. Longman.
- McCarthy, M. and O’Dell, F. (2010). English Vocabulary in Use: Upper-Intermediate. Cambridge University Press.
- Crystal, D. (2003). The Cambridge Encyclopedia of the English Language. Cambridge University Press.
To practise what you learned in this lesson:
![Informal vocabulary in English [C1] — VocaVerb](https://vocaverb.com/wp-content/uploads/vv-cat-images/vv-cat-14100-en-768x320.png)