intruder

As a noun intruder

is someone who intrudes.

As a letter x is

the twenty-fourth letter of the.

As a symbol x is

voiceless velar fricative.

As nouns the difference between intruder and extruder

is that intruder is someone who intrudes while extruder is a machine that extrudes material through shaped dies.

As a noun intruder

is someone who intrudes.

As an adjective undefined is

lacking a definition or value.

As nouns the difference between spy and intruder

is that spy is a person who secretly watches and examines the actions of other individuals or organizations and gathers information on them (usually to gain an advantage) while intruder is someone who intrudes.

As a verb spy

is to act as a spy.

As nouns the difference between intruder and insiders

is that intruder is someone who intrudes while insiders is plural of lang=en.

As nouns the difference between intruder and storming

is that intruder is someone who intrudes while storming is the act by which something is stormed.

As a verb storming is

present participle of lang=en.

As nouns the difference between prowler and intruder

is that prowler is one who roves about for prey; one who prowls while intruder is someone who intrudes.

As nouns the difference between foreign and intruder

is that foreign is (informal) foreigner while intruder is someone who intrudes.

As an adjective foreign

is located outside a country or place, especially one's own.

As nouns the difference between intruder and thief

is that intruder is someone who intrudes while thief is one who has carried out a theft.

As a noun intruder

is someone who intrudes.

As a verb thieve is

(intransitive): to commit theft.