Mo. Rev. Stat. § 469.030: Acceptance, how shown, preclusion of later disclaimer — who may accept or disclaim.

1. Except as otherwise provided in sections 469.090 and 469.100, acceptance of a transferred interest or a portion thereof may be shown by conduct, including acceptance of benefits. Acceptance precludes any later disclaimer.

2. A disclaimer or acceptance may be made on a person's behalf by the person's representative who may be an authorized agent, the guardian or conservator of a minor or disabled person, or the personal representative of a deceased person.