estropear

Use imperfect subjunctive estropeara/estropéara for past hypotheticals or wishes, like 'Si estropeara...' (If I were to break...)

Use present subjunctive estropee, estropeen etc. for wishes, doubts, and emotions: 'Espero que no estropees nada' (I hope you don't break anything).

Negative commands use 'no' plus present subjunctive: 'no estropees' (don't break).

Use imperative estropea, estropee, etc. for direct commands, like '¡Estropea el vaso!' (Break the glass!).

Conditional estropearía, estropearías expresses hypotheticals ('would break'): 'Si tuviera dinero, no estropearía el coche' (If I had money, I wouldn't break the car).

The preterite of estropear is regular: estropeé, estropeaste, estropeó, estropeamos, estropeasteis, estropearon.

Imperfect estropeaba, estropeabas describes ongoing or habitual past actions: 'Antes estropeaba mis juguetes' (I used to break my toys).

Present estropeo, estropeas, etc. describes current actions or habits: 'Yo estropeo las plantas si no las riego' (I ruin the plants if I don't water them).

Future estropearé, estropearás predicts or assumes something will break: 'El vaso se estropeará' (The glass will break).