Undeaf, un-def′, v.t. (Shak.) to free from deafness.

Undean, un-dēn′, v.t. to deprive of the office of a dean.

Undecagon, un-dek′a-gon, n. (geom.) a figure having eleven angles. [L. undecim, eleven, Gr. gōnia, an angle.]

Undeceive, un-dē-sev′, v.t. to free from deception or mistake.—adj. Undeceiv′able.

Undecency, un-dē′sen-si, n. (obs.) indecency.—adj. Undē′cent (obs.), indecent.—adv. Undē′cently (obs.).

Undecennial, un-dē-sen′i-al, adj. pertaining to a period of eleven years, occurring on the eleventh year, or every eleven years.—Also Undecenn′ary. [L. undecim, eleven.]

Undecided, un-dē-sī′ded, adj. not having the mind made up, irresolute.—adj. Undecī′dable, that cannot be decided.—adv. Undecī′dedly.—n. Undecī′dedness.

Undecimole, un-des′i-mōl, n. (mus.) a group of eleven notes to be taken in the time of eight.

Undecipherable, un-dē-sī′fėr-a-bl, adj. indecipherable.

Undecisive, un-dē-sī′siv, adj. indecisive.