daunt 
(dônt, dänt)
(dônt, dänt)tr.v. daunt·ed, daunt·ing, daunts
To lessen the courage or resolution of; dishearten or intimidate: "Dogged by sickness, daunted by the continuing economic downturn, he continued to fall behind" (Brooks D. Simpson).
[Middle English daunten, from Old French danter, from Latin domitāre, frequentative of domāre, to tame; see demə- in the Appendix of Indo-European roots.]
daunter n.
daunting·ly adv.