disadvantageous

disadvantage +‎ -ous

• (UK) IPA^(key): /dɪsˌædvənˈteɪdʒəs/

disadvantageous (comparative more disadvantageous, superlative most disadvantageous)

1. Not advantageous.
   • 1962 October, G. Freeman Allen, “The New Look in Scotland's Northern Division—II”, in Modern Railways, page 271:

     Another disadvantageous feature of the Perth yard, again dictated by the considerations of the site, is that the six double-ended reception roads are alongside the sorting sidings and not laid end-to-end with them.

• disadvantageously