Origin: French suffix -age
Disadvantage has 4 different meanings across 2 categories:
the quality of having an inferior or less favorable position
"The steep hill was a distinct disadvantage for our heavy cargo truck compared to the lighter vans."
A weakness or undesirable characteristic; a con.
"The lack of experience is his greatest disadvantage in running for office."
In plain English: A disadvantage is something that makes it harder for you to succeed compared to others.
"The lack of internet access was a major disadvantage for her job search."
Usage: Use at a disadvantage rather than in, and avoid using the noun as an adjective before another noun (e.g., write "a position of disadvantage," not "disadvantage position"). The verb form is often interchangeable with "handicap" or "impair," but it specifically implies creating conditions that make success harder.
put at a disadvantage; hinder, harm
"This rule clearly disadvantages me"
To place at a disadvantage.
"The steep hill placed us at a significant disadvantage compared to the runners coming from behind."
In plain English: To put someone at a disadvantage means to make it harder for them to succeed compared to others.
"The new tax policy will disadvantage small business owners more than large corporations."
The word entered English from Middle English disavauntage, which was borrowed directly from the Old French term desavantage. It originally carried a sense of harm or loss before evolving into its modern meaning of putting someone at a lower level compared to others.