magtiis, tiisin (mag-:-in) to bear, to suffer, to endure. Nagtiis siya ng katakut-takot na hirap. He endured a great deal of hardship. Tiisin mo ang hapdi. Endure the stinging pain.
tagal
adj.
matagal (ma-) late, that takes a long time, for a long period of time
v.
tumagal (-um-) to endure, to withstand. Tumagal siya sa hirap. He withstood the hardship.
v.
magtagal (mag-) to take a long time, to stay long. Huwag kang magtagal. Don't be long.