1
A word with one syllable.
monosyllable
Happening twice a year.
biannual
Having three colors.
tricolor
Four fold.
Quadruple
A word with five syllables.
pentasyllable
A railway system using only one rail.
monorail
Two people performing together.
duet
triathlete
Group or set of four.
tetrad
A shape with five sides.
pentagon
One of a kind.
unique
Having two wheels.
bicycle
A series of three books.
trilogy
A quarter of a circle.
quadrant
A group of five musicians.
quintet
Complete control over an entire market.
monopoly
In a state of uncertainty between two unfavorable options.
dilemma
Speaking three languages.
trilingual
A polygon having four angles and four sides.
tetragon
quintuplets
To make into or become one unit
unify
Using two eyes to see.
binocular
Mathematical study of figure with three angles.
trigonometry
Having four fingers on a hand.
tetradactyl
Five times as much.
quintuple