Laggard (noun)

1. A person who makes slow progress and falls behind others.
2. A person who is slow to adopt new ideas or technologies.

Origin:

Middle english lagard, from old english lægere, from læg; akin to old high german laggāri laggard.

Examples:

1. The company was criticized for being a laggard in adopting new technologies.
2. Despite his initial enthusiasm, he quickly became a laggard in the marathon training group.
3. The economy has been lagging behind that of other developed countries for several years.
4. He was always the last one to finish his work, a true laggard.
5. The stock has been a laggard in the market, not performing as well as the others.