Explanation
In Japan, the thumbs-up gesture is widely understood as a positive sign meaning 'good job' or 'OK,' especially among younger generations and in urban areas. However, older or more traditional individuals may still associate it with its older, less common meaning of 'boss' or 'leader,' but this is rare in everyday contexts. It is generally safe to use in casual settings, though it is not as universally positive as in Western cultures.
Local Tip
Use the thumbs-up in casual conversations with friends or younger colleagues, but avoid it in formal business meetings or with elderly individuals to be safe.
How it compares elsewhere
Thumbs-up is considered a childish or offensive gesture, similar to showing the middle finger in some contexts.
In Iran, the thumbs-up is an obscene insult, equivalent to showing the middle finger.
In parts of Nigeria, the thumbs-up is seen as a rude or insulting gesture, especially when directed at someone of higher status.