un·daunt·a·ble 
(ŭn-dôntə-bəl, -dän-)
(ŭn-dôntə-bəl, -dän-)adj.
Not admitting of discouragement: undauntable heroism; undauntable optimism.
- cross-pollinate
- cross-pollination
- cross product
- cross-purpose
- cross-question
- cross-react
- cross-reaction
- cross-reactive
- cross-reactivity
- cross-refer
- cross-reference
- cross-resistance
- crossroad
- crossruff
- cross section
- cross-section
- cross-sectional
- cross-sell
- cross-selling
- cross (someone's) palm
- cross someone's palm
- cross-stitch
- cross-stratification
- cross swords
- crosstalk