Intrusion adjectives are listed in this post. Each word below can often be found in front of the noun intrusion in the same sentence. This reference page can help answer the question what are some adjectives commonly used for describing INTRUSION.
abrupt, alien, based, bold, constant, european
federal, first, foreign, further, governmental, human
impertinent, minimal, new, occasional, outside, personal
physical, possible, profane, rude, strange, such
sudden, unauthorized, unexpected, unnecessary, untimely, unwanted
unwarrantable, unwarranted, unwelcome, violent
Hope this word list had the adjective used with intrusion you were looking for. Additional describing words / adjectives that describe / adjectives of various nouns can be found in the other pages on this website.