sappest

Verb (1)

sap (third-person singular simple present saps, present participle sapping, simple past and past participle sapped)

1. (figuratively, transitive) To exhaust the vitality of.
   • Somewhat he knoweth of art magical, yet useth not that art; for it sappeth the life and strength, nor is it held worthy that a Demon should put trust in that art, but rather in his own might and main.1922, E[ric] R[ücker] Eddison, The Worm Ouroboros: A Romance, London: Jonathan Cape […], →OCLC, page 6
2. (transitive) To drain, suck or absorb sap from (a tree, etc.).

Verb (2)

sap (third-person singular simple present saps, present participle sapping, simple past and past participle sapped)

1. (transitive) To make unstable or infirm; to unsettle; to weaken.
   • Ring out the grief that saps the mind[…]1850, Alfred Tennyson, Ring, Out, Wild Bells
2. (transitive) To gradually drain (someone's energy or vitality).
   • to sap one’s conscience
3. (transitive) To pierce with saps.
4. (transitive) To subvert by digging or wearing away; to mine; to undermine; to destroy the foundation of.
   • Nor safe their dwellings were, for sapped by floods, / Their houses fell upon their household gods.1717, John Dryden [et al.], “(please specify |book=I to XV)”, in Ovid’s Metamorphoses in Fifteen Books. […], London: […] Jacob Tonson, […], →OCLC

See all 16 meanings of sap