noun
uninvited guest; gate-crasher
Refers to someone who shows up without prior notice or invitation, often implying a slight imposition.
週末に押し掛け客が来て、ゆっくりできなかった。
An uninvited guest came over on the weekend, so I couldn't relax.
彼はいつも突然押し掛け客になる。
He always shows up uninvited.
More formal and literary; emphasizes being unwelcome rather than just unannounced.
Compound of 押し掛け (pushing in, forcing one's way) and 客 (guest).