tough
Colloquial for hard, difficult, or demanding.
Die Prüfung war echt tough, aber ich glaube, ich habe sie bestanden.
The exam was really tough, but I think I passed it.

Loading your saved state.
Colloquial for hard, difficult, or demanding.
Die Prüfung war echt tough, aber ich glaube, ich habe sie bestanden.
The exam was really tough, but I think I passed it.

'Tough' is a word borrowed from English and is used especially in colloquial language. The pronunciation is based on the English pronunciation.
Das war ein tougher Tag im Büro.
That was a tough day at the office.
Although it is an English word, 'tough' is declined like a normal German adjective when it comes before a noun.
Er ist ein tougher Gegner im Tennis.
He is a tough opponent in tennis.
When 'tough' describes a person, it means that they are resilient and mentally strong. If it refers to a thing or situation, it means 'schwierig' (difficult) or 'anstrengend' (strenuous).
Meine Chefin ist eine wirklich toughe Frau.
My boss is a really tough woman.
heavy / difficult
'schwer' and 'tough' can both express that something is difficult or demanding. 'schwer' is the normal German word and fits in almost all situations, including at school, at work, or in exams. 'tough' is colloquial and sounds more modern or casual. In addition, 'tough' can describe a person who is strong and resilient; 'schwer' does not fit for that. Learners may confuse the words because 'tough' is often meant like 'schwer'. In neutral texts, 'schwer' is usually more natural.

Nach drei Nachtschichten bleibt er trotzdem ruhig; er ist wirklich tough.
After three night shifts, he still stays calm; he is really tough.
Die Prüfung nächste Woche wird schwer, weil wir sehr viel lernen müssen.
The exam next week will be difficult because we have to study a lot.