butt heads

Etymology
From the activities of some horned animals, which compete by butting, or hitting, their heads against one another.

Verb

 * 1)  To argue uncompromisingly.
 * 2) To struggle against something that does not give way.
 * 1) To struggle against something that does not give way.
 * 1) To struggle against something that does not give way.

Translations

 * Chinese:
 * Mandarin: 發生衝突
 * Finnish:
 * French: ne pas se mouiller
 * Russian:
 * Spanish: