Actions speak louder than words and all of that, but the things you say definitely affect how other people see you and what they think of you.

There are certain phrases that, if a regular part of your vocabulary, are bound to make everyone around you think that you have some serious growing up to do. Here are some things you’ll probably want to stop saying if you don’t want to be seen as an immature, petulant child.
1. “It’s not fair!”

This really makes you sound like a whining kid. Life isn’t always fair, and pointing it out doesn’t change anything. Instead, try to focus on solutions or ways to improve the situation. Ask yourself what you can do to make things better, rather than just complaining.
2. “Whatever.”

Dismissing things with “whatever” comes across as apathetic and rude. It shows you’re not engaged in the conversation and don’t care about other people’s opinions. Try expressing your actual thoughts or politely disagreeing instead. If you need time to think, say so.
3. “That’s not my job.”

This makes you sound unwilling to help or be a team player. Even if something isn’t technically your responsibility, pitching in shows maturity and initiative. If you’re truly overloaded, explain your current workload and ask for guidance on how to prioritise the things on your to-do list.
4. “I can’t adult today.”

While meant to be cute, this phrase suggests you’re incapable of handling basic responsibilities. It can make you seem unreliable or incompetent. Instead, be specific about what’s challenging you. If you’re overwhelmed, it’s okay to ask for help or a break.
5. “I’m bored!”

Constantly saying you’re bored makes you sound like you lack initiative or creativity. Adults are expected to find ways to occupy themselves. If you’re feeling understimulated, try looking for new activities or ways to challenge yourself. Take responsibility for your own entertainment.
6. “That’s not my problem.”

This just comes across as selfish and uncaring. While you can’t solve everyone’s issues, showing empathy is a mark of maturity. Try acknowledging the problem and, if you can’t help directly, offer suggestions or support. It shows you’re considerate of the people around you.
7. “You’re just jealous.”

Accusing people of jealousy when they criticise or disagree with you sounds defensive and immature. It suggests you can’t handle feedback. Instead, try to understand their perspective or ask for more specific feedback. It shows you’re open to growth and self-reflection.
8. “I’ll do it later.”

Constantly putting things off makes you seem irresponsible and unreliable. If you can’t do something right away, give a specific time when you will do it. Follow through on your commitments. If you’re struggling with time management, look into productivity techniques or ask for help.
9. “It’s not my fault.”

Always deflecting blame makes you appear immature and unable to take responsibility. Even if something wasn’t entirely your fault, focus on what you could have done differently. Taking ownership of your part in a situation shows maturity and self-awareness.
10. “I don’t care.”

Expressing apathy, especially about important matters, makes you seem immature and disengaged. If you truly don’t have a strong opinion, try saying “I don’t have a preference” instead. If it’s something you should care about, make an effort to engage and understand why it matters.
11. “You always/You never…”

Using absolutes like “always” or “never” in arguments sounds childish and is usually inaccurate. It can make other people defensive and shut down communication. Try to be specific about the behaviour you’re addressing without generalising. Use concrete examples instead of sweeping statements.
12. “That’s stupid.”

Dismissing ideas or opinions as “stupid” is rude and shows a lack of critical thinking. Even if you disagree, there are more mature ways to express it. Try asking questions to understand better, or explaining why you have a different view. It shows respect for other people’s thoughts.
13. “I hate you.”

Throwing around strong words like “hate” in the heat of the moment is childish and hurtful. It’s okay to express anger, but do it in a more mature way. Focus on the specific behaviour that upset you rather than attacking the person. Use “I” statements to express your feelings.
14. “Leave me alone.”

While everyone needs space sometimes, saying “leave me alone” can come across as bratty. Instead, try “I need some time to myself right now” or “Can we talk about this later?” It communicates your needs without sounding like a moody teenager.
15. “It’s not a big deal.”

Dismissing people’s concerns with this phrase can make you seem insensitive and immature. Even if you don’t think something’s important, it clearly matters to the other person. Try to understand their perspective. Acknowledge their feelings, even if you don’t agree with the importance of the issue.
16. “I’m not listening.”

Plugging your ears (literally or figuratively) to avoid hearing something you don’t like is childish behaviour. Mature adults face issues head-on. If you need a break from a conversation, say so politely. Promise to revisit the topic when you’re in a better headspace to discuss it.
17. “You can’t make me.”

This just screams rebellious teenager. Adults understand that sometimes we have to do things we don’t want to. If you have a real issue with something, express your concerns calmly and look for compromises. Explain your perspective without resorting to defiance.