Loading your saved state.
Describes an informal, relaxed, and laid-back style, especially in clothing. It contrasts with formal or elegant clothing.
Für die Party am Freitag ist der Dresscode 'casual'.
For the party on Friday, the dress code is 'casual'.
The adjective 'casual' is usually used predicatively, after a verb like 'sein' (to be), or as an adverb. Declining it before a noun is possible, but less common.
Sein Kleidungsstil ist sehr casual.
His clothing style is very casual.
You can tell from context whether clothing or a relationship is meant. Words like 'Outfit' (outfit), 'Look' (look), or 'Kleidung' (clothing) point to fashion style. Words like 'treffen' (to meet), 'Beziehung' (relationship), or 'Sache' (thing) indicate a non-committal interpersonal relationship.
Für das Bürofest ist ein casual Outfit passend.
A casual outfit is appropriate for the office party.
In a fashion context, 'casual' is often used in fixed combinations. You often hear 'Casual Look', 'Casual Wear', or the dress code 'Business Casual'.
Viele Firmen haben einen „Casual Friday“, an dem man sich legerer kleiden darf.
Many companies have a 'Casual Friday', when you are allowed to dress more casually.
serious / seriously
'ernsthaft' and 'casual' can describe an opposition in attitude or interaction. 'ernsthaft' fits when something is meant seriously and does not seem like a joke. 'casual', by contrast, describes something relaxed, informal, or not very committed. In clothing, 'casual' also means laid-back, but this contrast does not directly fit 'ernsthaft'. So context is important: with intentions, conversations, or relationships, 'ernsthaft' stands for seriousness, while 'casual' suggests relaxed informality.
Für das Treffen mit Freunden wählte Max einen casual Look.
Max chose a casual look for meeting his friends.
Vor der Prüfung führte die Lehrerin ein ernsthaftes Gespräch mit der Klasse.
Before the exam, the teacher had a serious conversation with the class.