have something against something Definition

against
prep

1. Close to or leaning on something; in contact with it.

Thesaurus: abutting, adjacent to, close to, facing, fronting, in contact with, touching, next to.
2. Into collision with something or someone.

Thesaurus: counter to, facing, opposite, toward, into.
3. In opposition to something.

Thesaurus: contrary to, in opposition to, opposed to, adverse to, versus, hostile to, in defiance of.
4. In contrast to something.

Example: against a dark background
5. With a bad or unfavourable effect on someone or something.

Example: His youth is against him
6. As a protection from someone or something.
7. old use
In anticipation of or preparation for something.
8. In return for something.

Example: the exchange rate against the franc

Idiom: as against something

In comparison with it.

Idiom: have something against someone or something

To have a reason for disliking or disapproving of them or it.

Etymology: 12c as ageines, meaning ‘in front of'.