The word "stirre" is an archaic spelling of "stir" which means to move or agitate something. It is pronounced as /stɜːr/ - with the emphasis on the first syllable. The pronunciation of the "ir" vowel combination is phonetically represented as /ɜːr/ which sounds similar to the "air" sound in "hair". The spelling "stirre" was commonly used in Middle English but was later simplified to "stir" in modern spelling.
The word "stirre" originated in Middle English and its etymology can be traced back to the Old English word "styrian", which means "to move". It is also related to the Middle Low German word "stirren", meaning "to disturb" or "to agitate". Over time, the spelling and pronunciation of the word evolved into "stirre" in Middle English.