► undress to remove the clothes you are wearing. Undress sounds more formal than get undressed:
Matt undressed and stepped into the shower.Ann didn’t want to undress in front of the other girls.► get undressed to remove your clothes:
Get undressed and put this robe on. The doctor will be in to see you in a moment.➔ Get undressed and take your clothes off are the usual phrases to use in everyday English.► take off to remove something you are wearing:
She took off her clothes and put on her pajamas.If you are too warm, take your sweater off.► change also get changed to take off your clothes and put on different clothes:
I’ll be ready in a second - I just have to get changed.Ed changed out of his suit and into a T-shirt and pair of jeans.► strip to take off your clothes quickly, especially all of your clothes:
The boys stripped and jumped in the lake.➔ You cannot use strip before pieces of clothing. Don't say: He stripped his sweater. However, you can use strip off: He stripped off his sweater.