Intermediate (B1)
IPA: /ˌdɪsədˈvæntɪdʒəs/
KK: /ˌdɪsədˈvæntɪdʒəs/
Definition
Causing harm or having a negative effect; not beneficial.
Example
The new policy was seen as disadvantageous to small businesses.
Conversation

I heard that working late can be disadvantageous for our health.

Yeah, I read that too; it can really mess with your sleep schedule.

Exactly! I feel more tired when I stay up late for work.

It's better to keep a regular routine, so we don’t face disadvantageous effects.
Synonyms & Antonyms
Synonyms
detrimental
unfavorable
harmful
Antonyms
advantageous
beneficial
favorable
Root Explanation
Disadvantageous → It is formed from "dis-" (meaning apart or not), "advantage" (from Old French *avantage*, meaning benefit or profit), and "-ous" (meaning full of). The word describes a state of being full of disadvantages or lacking benefits.
Memory Tip
Think of 'not having benefits' ('dis-') and being 'full of' ('-ous') disadvantages.
Visually Confused Words
undisadvantageous
predisadvantageous
advantageous
predisadvantageously
unadvantageous
advantageously
misadvantage
predisadvantage