To foretaste something is to give people a small early taste of a bigger thing that is coming — a sign of something more important or more impressive later. We use it as a noun even more often: a foretaste of summer, a foretaste of the trouble ahead. The 'taste' here is usually not food. It is the feeling of meeting a little of something before the real thing arrives: the first warm day as a foretaste of summer, a short film as a foretaste of a long series. It is a slightly literary, grown-up word. In everyday talk people more often say a taste of, a preview, or a sign of. Though actually, the verb is less common than the noun. Many careful speakers would rather say this small win is a foretaste of a bigger change than this small win foretastes a bigger change — both are possible, but the noun sounds more natural.

前奏、先嚐到的滋味；當動詞時是預示