Associated with disadvantages or having a negative effect. Something that has an unfavorable or harmful impact.
example
Die neuen Regelungen könnten sich nachteilig auf kleine Unternehmen auswirken.
The new regulations could have a disadvantageous effect on small businesses.
Usage tips
Word structure
The adjective 'nachteilig' (disadvantageous) is derived from the noun 'der Nachteil' (the disadvantage). It therefore describes a quality or effect that brings a disadvantage with it.
EXAMPLE
Die lange Anfahrt ist ein großer Nachteil bei diesem Jobangebot.
The long commute is a major disadvantage with this job offer.
Sentence structure and usage
'Nachteilig' (disadvantageous) is often used in two fixed patterns: with the verb 'sein' (to be) and the preposition 'für' (for) (something is disadvantageous for someone), or with the reflexive verb 'sich auswirken' (to have an effect) and the preposition 'auf' (on) (something has a disadvantageous effect on something).
EXAMPLE
Eine schlechte Vorbereitung ist nachteilig für das Prüfungsergebnis.
Poor preparation is disadvantageous for the exam result.
Register and style
'Nachteilig' (disadvantageous) belongs more to formal language. You often find it in reports, official letters, or in discussions about economic or social topics.
EXAMPLE
Die Entscheidung des Managements erwies sich als nachteilig für die Mitarbeiter.
The management's decision proved disadvantageous for the employees.
Compare with
antonym
nachteilig vs positiv
positive
'positiv' and 'nachteilig' are clear opposites when it comes to effect or evaluation. 'positiv' describes something good, desired, or helpful. 'nachteilig' describes something that brings disadvantages or has an unfavorable effect. 'positiv' is very general and fits many everyday situations. 'nachteilig' sounds somewhat more factual and is often used when evaluating consequences, rules, decisions, or conditions.
nachteilig
Die langen Arbeitszeiten waren für seine Gesundheit nachteilig.
The long working hours were disadvantageous for his health.
positiv
Nach dem Gespräch hatte sie ein positives Gefühl.
After the conversation, she had a positive feeling.