The phrase "was designed for" refers to something that has been created with a specific purpose or intention in mind. Synonyms for this phrase include "was intended for," "was created for," "was made for," and "was built for." These synonyms convey the same meaning as "was designed for" and can be used interchangeably in many contexts. For example, "The playground was designed for children," could also be phrased as, "The playground was intended for children," "The playground was created for children," "The playground was made for children," or "The playground was built for children." Using synonyms can add variety to writing and make it more interesting to read.