tried

adj [attrib 作定语] that has been proved to be effective, reliable, etc 经证明有效、 可靠等的: a tried (and tested) remedy 经（试验）证明有效的疗法 * a tried and true friend 经过考验的真正的朋友.

tribalism, tribe, tribesman, tribulation, tribunal, tributary, tribute, trice, triceps, trick, trickery, trickily, trickiness, trickle, trickle charger, trickster, tricky, tricolour (US tricolor), tricycle, trident, triennial, triennially, trier, trifle, trifler, trifling, trigger, trigger-happy, triglyceride, trigonometric, trigonometrical, trigonometrically, trigonometry, trike, trilateral, trilaterally, trilby, trilingual, trill, trillion, trillionth,