n. upgrade; v. go uphill, on an upgrade. Ug musubída ang karsáda, isigunda, When the road goes into an upgrade, shift into second. Nangínit ang makina samtang nagsubída ang trák, The motor overheated while the truck was negotiating the upgrade. subidahun a. 1. steep; 2. difficult, hard to solve. Subidahun kaáyu ning sulirána, This problem is very difficult; v. be, become difficult or steep.