WordNet sense 1 (as a formality only):

pro forma

WordNet sense 2 (being in accord with established forms and conventions and requirements (as e.g. of formal dress)):

formal

WordNet sense 3 (hasty and without attention to detail; not thorough):

casual, cursory, passing

WordNet sense 4 (marked by lack of attention or consideration or forethought or thoroughness; not careful):

careless