"Stickybeak" is a colorful word that describes someone who is overly curious and nosy. Synonyms for this word include "nosey parker," "busybody," "eavesdropper," "snoop," "meddler," and "intruder." "Nosey parker" has been in use since the early 20th century, and it is still a popular synonym for "stickybeak." "Busybody," on the other hand, has been used since the 16th century and describes someone who is excessively concerned with the affairs of others. "Eavesdropper" is another synonym for "stickybeak," and it describes someone who listens in on conversations that are not meant for them. Overall, these synonyms are great alternatives that can be used to describe someone who is overly curious and inquisitive.