"Letted oneself for" is not a commonly used phrase in modern English. However, its spelling can be explained using the International Phonetic Alphabet (IPA). The first syllable "let" is pronounced /lɛt/ with a short "e" sound. The second syllable "ted" is pronounced /tɛd/, also with a short "e" sound. The third syllable "self" is pronounced /sɛlf/ with a short "e" sound and the final syllable "for" is pronounced /fɔr/ with an "o" sound. Therefore, the full pronunciation of "letted oneself for" is /lɛtɪd wʌnsɛlf fɔr/.