がほしい details
Examples
want a thing — the speaker's desire for an object or state of affairs
誕生日には新しいイヤホンがほしいな。
tanjoubi ni wa atarashii iyahon ga hoshii na.
For my birthday I want new earphones. casual
今は自分の時間がほしいです。
ima wa jibun no jikan ga hoshii desu.
Right now I want some time to myself. neutral
この件については、もう少し詳しい資料がほしいのですが。
kono ken ni tsuite wa, mou sukoshi kuwashii shiryou ga hoshii no desu ga.
On this matter, I would like somewhat more detailed materials. neutral
Formation
{N}がほしいattaches to noun
Notes
Related patterns
Similar
Same ほしい predicate, same i-adjective conjugation and first-person default — but Nがほしい covets a thing, while V-てほしい asks for someone else's action.
Both conjugate as i-adjectives and mark the desired target with が — たい wants an ACTION and rides a verb stem, ほしい wants a THING and follows a bare noun.
Lookalikes
欲しがる looks like 欲しい＋がる and is exactly that — but the case flips (犬が欲しい→犬を欲しがる) and the first-person restriction lifts, so mixing the two case frames is the standard error.