1. To be something that gives or suggests the answer 'no'. English = (be) negative.
2. To consider only the disadvantages and bad aspects of a situation, rather than the advantages and good aspects. English = (be) negative.
3. To put you in a worse position that other people, or to be likely to worsen a situation. English = (be) disadvantageous.
4. In life generally, especially in a social or economic sense, to have fewer or unequal opportunities than your peers. English = disadvantaged.