Careful I Adjective Bre ˈkeəfl ˈkerfl Sight Wake

• be careful!
• he was careful to keep out of sight.
• be careful not to wake the baby.
• you must be careful when handling chemicals.

careful

1. giving attention or thought to what you are doing so that you avoid hurting yourself, damaging something or doing something wrong
• Be careful!
• He was careful to keep out of sight.
• Be careful not to wake the baby.
• You must be careful when handling chemicals.
• Be careful what you say.
• Be careful of the traffic.
• Please be careful with my glasses (= Don't break them).
• I’m very careful about washing my hands before eating (= I make sure I do it).
• Be careful you don't bump your head.
• Look out! There's a car coming.
• Be careful. It can be quite dangerous on that path.
• Watch out. That's not a very safe place at night.
• Make sure you keep hold of your bag.
• I wouldn't do that if I were you.
2. giving a lot of attention to details
• opposite careless
  https://www.oxfordlearnersdictionaries.com/definition/english/careless
• a careful piece of work
• a careful examination of the facts
• After careful consideration we have decided to offer you the job.
3. not spending money on unimportant things
• His mother had always been careful with money.
4. used to warn somebody that they should take care to avoid danger or problems
• Don't stay out in the sun for too long—you can't be too careful.

Extra Examples

• Be particularly careful when swimming in the lake.
• Bitter past experience had made her careful of what she confided to Nadia.
• He’s very careful of his reputation.
• She was quite careful about how she spoke to him.
• She’s extremely careful with money.
• A careful examination of the facts suggests a different conclusion.
• I’m very careful about washing my hands before eating.
• Please be careful with my glasses.
• This is a very careful piece of work.

Word Origin

• Old English carful (see care, -ful).