Ang terminong "pag-aapoy" ay karaniwang tumutukoy sa pagkilos ng sadyang pagsunog sa ari-arian o pagdulot ng sunog, kadalasang may layuning magdulot ng pinsala o pagkasira. Madalas itong ginagamit sa mga legal na konteksto upang ilarawan ang isang kriminal na pagkakasala na sinadya o walang ingat na pagsisimula ng sunog o pagsisimula ng sunog.
1. If the murder on Lady of Blackness, the attempts at fire-raising, and the assault on Amy were related, then somebody undoubtedly was pursuing a feud against Beaumont.
2. This affair went far beyond a simple assault or fire-raising.
3. She listened intently as Watters mentioned the fire-raising and Willie.
4. On the credit side, he had arrested a small group of misguided people who had been duped into criminal fire-raising.
5. The pieces were falling together one after the other without helping him find his murderer or the people behind the fire-raising.
6. There were William Caskie and his Continental arms manufacturers plus Drummond and Dumas, and there was the mysterious foreign woman who persuaded the abolitionists into fire-raising.
7. He had never seen the like before, and he remembered Ted describing a fire-raising device.