The word "Stainsby" is a surname with a complex spelling that can be explained using IPA phonetic transcription. The first syllable "stain" is pronounced /steɪn/ with a long "a" sound. The second syllable "sby" is pronounced as a single sound /sbi/, with the "s" and "b" blending together. The use of the letter "y" instead of "ey" at the end is an example of common spelling variations in English. Overall, the spelling of "Stainsby" reflects its origins as a surname with diverse linguistic influences.