The spelling of the phrase "wast insincere" may seem confusing due to the archaic language and irregular spelling patterns. In IPA phonetic transcription, "wast" is pronounced as /wɑːst/ which is an old-fashioned form of "was". "Insincere" is pronounced as /ɪnsɪnˈsɪə(r)/ with the stress on the second syllable. It is derived from the Latin word "sincerus" which means pure or sincere. Therefore, "wast insincere" can be interpreted to mean "you were insincere" in modern English.
"Wast insincere" is not a widely recognized term or expression, and it does not have a standard dictionary definition as a standalone phrase. The word "wast" is an antiquated form of the verb "to be" in the second person singular past tense, used in Old English. On the other hand, "insincere" is an adjective commonly used to describe someone or something that is not genuine, honest, or forthright in their actions, words, or intentions.
Therefore, one could infer that "wast insincere" suggests an archaic and somewhat illogical combination of ideas. It might be interpreted as someone referring to a past situation where they, or someone else, in the second person, were insincere in their actions or expressions at the time. The phrase lacks clarity and seems to combine an outmoded verb form with a modern adjective, making it a peculiar and nonsensical phrase in contemporary usage.
Nonetheless, if this phrase were to have a built-in meaning or connotation, it would revolve around the archaic past tense verb "wast" and the concept of insincerity. In that context, it might refer to a historical or fictional account where someone in the past was dishonest, deceitful, or lacking genuineness in their behavior or communication. However, due to the vagueness and obscurity of the phrase, such an interpretation can only be speculative.