Webster’s Revised Unabridged Dictionary · 1913
Embolden
Em·bold′en (ĕm·bōld′'n), v. t. [imp. & p. p. Emboldened; p. pr. & vb. n. Emboldening.] To give boldness or courage to; to encourage. Shak.
The self-conceit which emboldened him to undertake this dangerous office. Sir W. Scott.