9A.36.041. Assault in the fourth degree
(1) A person is guilty of assault in the fourth degree if, under circumstances not amounting to assault in the first, second, or third degree, or custodial assault, he or she assaults another.
(2) Assault in the fourth degree is a gross misdemeanor, except as provided in subsection (3) of this section.
(3) Assault in the fourth degree, where domestic violence was pleaded and proven after the effective date of this section, is a class C felony if the person has two or more prior adult convictions within ten years for any of the following offenses where domestic violence as defined in RCW 9.94A.030 was pleaded and proven after the effective date of this section:
(a) Repetitive domestic violence offense as defined in RCW 9.94A.030;
(b) Crime of harassment as defined by RCW 9A.46.060;
(c) Assault in the third degree;
(d) Assault in the second degree;
(e) Assault in the first degree; or
(f) An out-of-state comparable offense.
(4) For purposes of subsection (3) of this section, family or household members means spouses, domestic partners, former spouses, former domestic partners, persons who have a child in common regardless of whether they have been married or have lived together at any time, persons sixteen years of age or older who are presently residing together or who have resided together in the past and who have or have had a dating relationship, and persons sixteen years of age or older with whom a person sixteen years of age or older has or has had a dating relationship.