1. (

• dirty ,
• pestiferous

) contaminated with infecting organisms; "dirty wounds"; "obliged to go into infected rooms"- Jane Austen ;

2. (

• pestilent ,
• pestilential ,
• pestiferous ,
• plaguey

) likely to spread and cause an epidemic disease; "a pestilential malignancy in the air"- Jonathan Swift; "plaguey fevers" ;

3. (

• corruptive ,
• perversive ,
• pestiferous

) tending to corrupt or pervert ;

4. (

• annoying ,
• bothersome ,
• galling ,
• irritating ,
• nettlesome ,
• pesky ,
• pestering ,
• pestiferous ,
• plaguy ,
• plaguey ,
• teasing ,
• vexatious ,
• vexing

) causing irritation or annoyance; "tapping an annoying rhythm on his glass with his fork"; "aircraft noise is particularly bothersome near the airport"; "found it galling to have to ask permission"; "an irritating delay"; "nettlesome paperwork"; "a pesky mosquito"; "swarms of pestering gnats"; "a plaguey newfangled safety catch"; "a teasing and persistent thought annoyed him"; "a vexatious child"; "it is vexing to have to admit you are wrong" ;