"Acht" is a German word which translates to "eight" in English. However, there are several synonyms for this word that can be used interchangeably depending on the context. Some common synonyms for "acht" include "octave," "octagon," "octopus," and "octennial." An "octave" is often used in music and refers to the interval between two notes that have a frequency ratio of 2:1. "Octagon" is a geometrical shape with eight sides and angles. "Octopus" is a marine animal with eight arms. "Octennial" is an adjective that indicates something occurring every eight years. These synonyms for "acht" add diversity to the language and can be used to elicit different meanings depending on the context in which they are used.