The correct spelling of the phrase "wast ahead of" is actually "was ahead of". The word "wast" is an archaic form of the verb "to be" and is no longer commonly used in modern English. The correct pronunciation of "was" is /wɒz/ or /wʌz/ depending on the speaker's regional dialect. The phrase "was ahead of" means that someone or something was in a leading position or had a head start.