mono/mon
one, single, alone
poly
many
monarchy
rule by a single person
monochromatic
of one color
monocle
eyeglass for one eye
monogamy
marriage with one mate at a time
monogram
two or more letters interwoven to represent a name
monograph
written account of a single thing or class of things
monolith
single stone of large size; obelisk
monolithic
massive and rigidly uniform
monolog(ue)
long speech by one person
monomania
excessive concentration on one idea or subject
monomorphic
having a single form
monosyllabic
having one syllable
monotheism
belief that there is one God
monotonous
continuing in an unchanging tone; wearying
polyarchy
rule by many; government having three or more rulers
polychromatic
having a variety of colors; multicolored; variegated
polygamy
marriage to several people at the same time
polyglot (adjective)
speaking several languages
polyglot (noun)
person who speaks several languages
polygon
closed plane figure having, literally, many angles and therefore many sides
polymorphic
having various forms
polyphonic
having many sounds or voices
polysyllabic
having more than three syllables
polytechnic
dealing with many applied sciences and technical arts
polytheism
belief that there is a plurality of gods