The phrase "no worries" is commonly used in English to convey that there is no problem or concern about a situation. It is often used to reassure someone that everything is fine or to indicate that they should not feel guilty or stressed about something.
The phrase "no worries" is believed to have originated from Australian English and became popular in the late 20th century. It reflects a laid-back, relaxed attitude typical of Australian culture. The phrase combines "no," which negates the presence of worries, with "worries," referring to concerns or anxieties.