秘密【ひみつ】
secret, secrecy, confidentiality, privacy, mystery, secret (e.g. to success), esoteric teachings
密接【みっせつ】
close (relationship, connection, etc.), intimate, near, being in close proximity, being adjacent
密輸【みつゆ】
smuggling, contraband trade
精密【せいみつ】
precise, exact, detailed, accurate, minute, close
機密【きみつ】
secrecy, highly classified information
厳密【げんみつ】
strict, close, precise, scrupulous
密度【みつど】
density
密売【みつばい】
illicit sale, smuggling, bootlegging, trafficking
親密【しんみつ】
intimacy, friendship
密集【みっしゅう】
crowding together, clustering together, close formation, swarm
綿密【めんみつ】
minute, detailed, careful, scrupulous, thorough
密入国【みつにゅうこく】
smuggling oneself into a country, illegal immigration