A Glaswegian here, who learned phonetics for a text-to-speech project. A Glasgow accent actually has the closest correspondence between spelling and pronuncia

A Glaswegian here, who learned phonetics for a text-to-speech project. A Glasgow accent actually has the closest correspondence between spelling and pronunciation of any accent of English. We don't all speak like Rab C. Nesbitt. The reason you might find it difficult to understand some Glaswegians is not so much lack of familiarity with their accent, but because they don't speak Standard English. What you're hearing is a mixture of English and a variety of Scots. Scots (https://en.wikipedia.org/wiki/Scots_language https://en.wikipedia.org/wiki/Scots_language) is a distinct language, though it's very closely related to English. So when, for example, you hear a word like mair (meaning more), it's not a different accent, it's a different language, just like German mehr or Dutch meer. Glaswegians pronouncing "more" in Standard English don't sound that different from Canadians or most Americans.