bottom dog
noun1
An underdog (someone at a disadvantage).
- There was also a belief that they had been taken advantage of - "kicked from pillar to post, the bottom dogs in the labour market because of the inherent love of railmen for their jobs", according to one NUR member.2023 March 22, Mike Esbester, “Staff, the public and industry will suffer”, in RAIL, number 979, page 38: