Key: "S:" = Show Synset (semantic) relations, "W:" = Show Word (lexical) relations
Display options for sense: (gloss) "an example sentence"
Noun
S: (n) preventive, preventative, prophylactic (remedy that prevents or slows the course of an illness or disease) "the doctor recommended several preventatives"
S: (adj) preventive, preventative, prophylactic (preventing or contributing to the prevention of disease) "preventive medicine"; "vaccines are prophylactic"; "a prophylactic drug"