Wotcher
Wotcher is a greeting, primarily of British origin, and considered informal. It's a contraction of "What cheer?" a traditional expression of goodwill and inquiry about someone's well-being. While once common, its usage has declined, and it's now often considered archaic or dialectal. It suggests a friendly and familiar relationship between the speaker and the person being greeted. The word is generally understood to mean "Hello," "How are you?" or "What's up?". Its use can also imply a certain level of shared background or understanding between the speakers.