“woe” – English explanatory dictionary

noun 1. sadness or trouble ○ Money cannot cure all the woes of the world. ○ She stopped me and told me her tale of woe. 2. □ woe betide trouble will come to (formal, humorous) ○ Woe betide anyone who tries to contradict my mother!

n. [OE. wo, wa, woo, AS. wa, interj.; akin to D. wee, OS. & OHG. we, G. weh, Icel. vei, Dan. vee, Sw. ve, Goth. wai; cf. L. vae, Gr. . rad.128. Cf. Wail.] [Formerly written also wo.]
1. Grief; sorrow; misery; heavy calamity. “Thus saying, from her side the fatal key,
Sad instrument of all our woe, she took.” Milton. “[They] weep each other’s woe.” Pope.
2. A curse; a malediction. “Can there be a woe or curse in all the stores of vengeance equal to the malignity of such a practice?” South. Woe is used in denunciation, and in exclamations of sorrow. ´ Woe is me! for I am undone.´ Isa. vi. 5. “O! woe were us alive [i.e., in life].” Chaucer. “Woe unto him that striveth with his Maker!” Isa. xlv. 9. Woe worth, Woe be to. See Worth, v. i. “Woe worth the chase, woe worth the day,
That costs thy life, my gallant gray!” Sir W. Scott.

a. Woeful; sorrowful. [Obs.] “His clerk was woe to do that deed.” Robert of Brunne. “Woe was this knight and sorrowfully he sighed.” Chaucer. “And looking up he waxed wondrous woe.” Spenser.