oponerse is a variation of the word oponer

oponer

∗

oponer

transitive verb

1. to put up (resistencia)

2. to put forward, to give (argumento, razón)

oponerse

pronomial verb

1. to be opposed

oponerse a algo -> to be opposed to something
todos se opusieron al plan -> everybody was opposed to the plan
me opongo a que vengan ellos también -> I'm opposed to having them come along too

oponer [o-po-nerr’]

article & verb transitive

1. To oppose, to go against, to contradict.

2. To oppose, to object in a disputation.

verb reflexive

3. To oppose, to be adverse, to act against, to be contrary.

4. To front, to be opposite to.

5. To steed in competition with another.

(Yo opongo, oponga; opuse, opusiera; opondré; from Oponer. V. PONER.

oponeropuesto (participio_de_pasado)

verbo:transitivo

1 [+resistencia] to put up

2 [+argumentos] to set out

estaba en desacuerdo y opuso sus razones he set out the reasons for his disagreement

opuso la razón contra la pasión

3 (poner contra)

opusieron un dique contra el mar they built a dyke as a defence against the sea

verbo:pronominal

oponerse to be opposed; (mutuamente) to oppose each other

yo no me opongo I don't object; oponerse a algo to oppose sth; se opone rotundamente a ello he is flatly opposed to it

Verb Conjugation for "oponer"

	Presente	Pretérito	Imperfect	Futuro	Subjuntivo
Yo	me opongo	me opuse	me oponía	me opondré	me oponga
Tú	te opones	te opusiste	te oponías	te opondrás	te opongas
Ella/Él/Usted	se opone	se opuso	se oponía	se opondrá	se oponga
Nosotros	nos oponemos	nos opusimos	nos oponíamos	nos opondremos	nos opongamos
Vosotros	os oponéis	os opusisteis	os oponíais	os opondréis	os opongáis
Ellos/Ustedes	se oponen	se opusieron	se oponían	se opondrán	se opongan