__ hygiene (4)
I believe the answer is:
oral
(Other definitions for oral that I've seen before include "By word of mouth, say exam" , "Spoken rather than written" , "Using speech rather than writing" , "Of the voice" , "Exam using speech" .)
I believe the answer is:
oral
(Other definitions for oral that I've seen before include "By word of mouth, say exam" , "Spoken rather than written" , "Using speech rather than writing" , "Of the voice" , "Exam using speech" .)