Gestures: The hand gesture that signals 'Okay' (by putting one's forefinger and thumb together to make a circle) is an obscenity in Greece. It is also severely insulting to hold up your open palm, fingers spread, at someone's face.
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Thumbs-Up. Avoid using this gesture in: Afghanistan, Iran, parts of Italy, and Greece. The gesture of 'Thumbs-up may look cool on Facebook or USA, but in Afghanistan, Iran, parts of Italy, and Greece, it means up yours. So, to avoid any awkwardness, next time you must reconsider what you are doing.
Greeks are warm and hospitable. When meeting someone for the first time, they shake hands firmly, smile, and maintain direct eye contact. Good friends often embrace; they may also kiss each other on each cheek. Male friends often slap each other's arm at the shoulder.
Interjection. p?-p? • (po-pó) (colloquial) frequently with repetition of the syllable p? (po, “po”) in a variety of intonations. (surprise, admiration): wow!