"Tackie" is a slang term commonly used to describe cheap, poorly made shoes or sandals. If you're looking for other words to describe these types of shoes, some synonyms you might use include "shoddy," "substandard," or "inferior." Alternatively, you could describe the shoes as "flimsy," "poorly constructed," or "low-grade." Another option might be to use more informal slang terms like "crappy," "janky," or "junk." Ultimately, the synonym you choose will depend on the level of formality needed for your particular situation, as well as the tone and context in which you're speaking or writing.