a. rare. [f. CAUSE sb. + -FUL.] † a. Showing or yielding a cause or reason. Obs. b. Having (good) cause or reason, well founded, well-grounded. c. That is a cause of, productive, fruitful of.
c. 1400. Test. Love, III. (1560), 298/2. Withouten causefull evidence, mistrust in jealousie should not be weued.
1586. Sidney, Astr. & Stella (1622), 575. Yet waile thy selfe, and waile with causefull teares.
1613. Sherley, Trav. Persia, 7. His causefull indignation.
1849. D. Jerrold, Man of Money, Wks. 1864, IV. 95. More causeful of blood and tears than the hammer of Thor.
