Ser vs Estar: Bueno, Malo, Bien or Mal?
Have you wondered if you should use está bueno or está bien? Or if it's es bueno instead? You're not alone! This is one important question and I'm here to give you the answer:
The usual combination
Let's start which what should be the default combinations in your head, the safe logical pairs:
Estar + bien/mal
Estar tends to be used with the adverb (bien/mal) and also any other verb. It's about being well or doing something well, or badly.
Estoy bien/Estoy mal - I'm (feeling/doing) well or badly
Cocino bien/Cocino mal -I cook well/badly
Ser + bueno/malo
Ser tends to be used with the adjective (bueno/malo) and they describe an ongoing quality on someone or something. And of course the adjective agrees with the thing described in gender and number.
Es un jugador bueno / Es una jugadora buena - He/she is a good player
Es un jugador malo / es una mala jugadora - He/she is a bad player
Es un libro bueno/ Es una novela buena -It's a good book/novel
Es un libro malo/ Es una novela mala - It's a bad book/novel
Son restaurantes muy buenos/malos -They are very good/bad restaurants
Buen/mal
Because saying something is good or bad is a subjective opinion, we tend to put it before the noun, and in that case, the masculine singular version gets shorter: From bueno to buen and from malo to mal. Taking the previous examples:
Es un buen jugador / Es una buena jugadora - The masculine one gets shorter but not the feminine version.
Es un mal libro/ Es una mala novela - It's a bad book/ novel
Again, the masculine gets shorter but not the feminine
Son buenas ideas - They are good ideas
Son malas ideas - They are bad ideas
Note that none of the plural versions get shorter either.
I know it can be a bit confusing that the shorter versions are so similar to the adverbs (buen vs bien) or even the same (mal vs mal) but they're still ongoing qualities and paired with ser.
Let's see now what happens when we get out of the usual combination, and other translations
Está bien
This is a phrase that as well as meaning "someone is feeling or doing well" can also be translated as "It's ok/fine/alright"
No te preocupes, está bien - Don't worry, it's ok/alright/fine
Maybe after someone apologises to you, for example.
Or when you describe something that is ok, maybe not great but ok
¿La película? Está bien - The movie? it's fine/ok/alright or even good
or in past too Estuvo bien - It was alright/good
This is quite common for things you consume or experience, like a movie, a play, a book, a show, a place or food. I notice in some contexts even emphasise this with "muy" in which case it becomes even more possitive:
Ese restaurante está muy bien - That restaurant is very good
Esa obra de teatro estuvo muy bien - That theatre play was very good.
Others: Está bien/mal
Morally right
There are two more possible translations for this one:
Morally right or correct, or morally wrong. Usually it's negative opinion:
Excluir a alguien del grupo no está bien/está mal - Excluding someone from the group is not ok or right / it's wrong.
Answers
For an answer to be right or wrong
Casi todas las respuestas del ejercicio 5 están bien, excepto una que está mal - Almost all answers from exercise 5 are right except for one that is wrong.
Opposite combo- Está bueno/malo
As we saw, the natural pair for bueno/malo is with ser but here we're breaking the rule and getting some new extra meanings:
We use this combination for a description in both people and food, a temporary state:
Está malo/a - someone is ill/ also for food to be in a bad state
"to be bad temporarily"
Está bueno/a - someone is hot or attractive / for food to be tasty
Exercises
I recommend these exercises to practice and get corrections on this topic:
https://deleahora.com/actividades/gramatica/bien-buen-o-bueno
https://deleahora.com/actividades/gramatica/bien-o-bueno-mal-o-malo
https://deleahora.com/actividades/gramatica/buen-bueno-mal-malo-adjetivos-con-o-sin-apocope
¡Buena suerte! :)