Undecennial
Word Structure
WordHub has a local lexical record for “Undecennial” with pronunciation and root analysis.
un-
one, single
Forms: uni, un
dec
ten; a decimal prefix used in the international metric system
Forms: decem, decim, deca, deci, dec
enn
year, yearly
Forms: ann, enn
-ial
of ~; like ~; having the nature of ~; the act of ~ing
Forms: al, ial, eal