Questions & Answers about Jego stary komputer jest gorszy.
What is the base dictionary form of gorszy? It doesn't look like a normal adjective.
Gorszy means "worse", and it is the irregular comparative form of the adjective zły (bad). Just like in English where "bad" completely changes to "worse", Polish changes zły to gorszy.
Why do we use the form gorszy ending in -y instead of gorsza or gorsze?
Because it is describing komputer, which is a masculine noun. Comparatives act exactly like regular adjectives, so they must match the noun's gender. If you were talking about a feminine noun like a book (książka), you would say gorsza. For a neuter noun like a car (auto), you would say gorsze.
Since zły can mean both "bad" and "angry" in Polish, does gorszy mean both "worse" and "angrier"?
No, gorszy is only used to mean "worse". If you want to say that someone is "angrier", you don't use this irregular form. Instead, you would use bardziej zły (literally: "more angry").
Does the word jego (his) change its ending to match the masculine noun komputer?