The spelling of the word "throught" is incorrect, and no such word exists in the English language. The closest word is "through", which is pronounced /θruː/. The sound represented by the "th" in "through" is a voiceless dental fricative /θ/. The "r" in "through" is not pronounced, but it may affect the preceding vowel sound, which is a long u sound /uː/. Proper spelling is important for effective communication in writing and should always be double-checked.