Il
Not
Illicit, illegal
Im
Not, into
Impotent (not), imported(into)
In
Not, into
Incapable (not), internal (into)
Inter
Between
Interstate, interlock
Intra
Within
Intramural
Itis
Inflammation, infection
Arthritis, bronchitis, appendicitis
Ium
Place, building of
Stadium, terrarium
Jeu/ju
Play, youthful
Juvenile, junior
Lab/labo
Work
Labor, laboratory
Laud
Praise
Applaud, laudable
Lav
Wash
Lave, lavish
Lev
Rise
Levitation, elavate
Loc/log/loqui
To speak
Loquacious
Lu/luc/lum
Light
Luminous, lucid
Mag/magna
Great
Magnificent, magnanimous