Antonyms of adj purpose-built
1 sense of purpose-built
Sense 1
purpose-built, purpose-made -- (designed and constructed to serve a particular purpose)
INDIRECT (VIA purposeful) -> purposeless -- (not evidencing any purpose or goal)
Similarity of adj purpose-built
1 sense of purpose-built
Sense 1
purpose-built, purpose-made -- (designed and constructed to serve a particular purpose)
=> purposeful (vs. purposeless) -- (serving as or indicating the existence of a purpose or goal)