beat up - to hit or kick somebody hard, many times - ตีจนบาดเจ็บอย่างรุนแรง Articles found: Incompetent killer (25/12/2017) Security guards beat up tourists in Phuket: Caught on CCTV (08/10/2015) Chonsawat Asavahame jailed after 16 year court battle (05/08/2015) Fake police & army: Watch out (02/07/2015) The stories behind the photos, part 1 (31/12/2014)