Ace of Swords
Upright
Triumph, the excessive degree in everything, conquest, triumph of force. It is a card of great force, in love as well as in hatred. The crown may carry a much higher significance than comes usually within the sphere of fortune-telling.
Reversed
The same, but the results are disastrous; another account says—conception, childbirth, augmentation, multiplicity.
A. E. Waite, The Pictorial Key to the Tarot (1911), Part III §2The picture
A hand issues from a cloud, grasping a sword, the point of which is encircled by a crown.
Older readings
Great prosperity or great misery. Reversed: Marriage broken off, for a woman, through her own imprudence.
A. E. Waite, The Pictorial Key to the Tarot (1911), Part III §4. Waite collected these and says they often disagree with the main meanings.Waite wrote in 1911 and some of his meanings show it. Tarot is a tradition of reflection, not a prediction, and no card decides anything for you.