ex·pres·sion·less 
(ĭk-sprĕshən-lĭs)
(ĭk-sprĕshən-lĭs)adj.
Lacking expression: Their faces remained expressionless as they listened to the bad news.
- magisterium
- magistracy
- magistral
- magistrate
- magistrature
- Maglemosian
- maglev
- magma
- magmatic
- Magna Carta
- Magna Charta
- magna cum laude
- Magna Graecia
- magnanimity
- magnanimous
- magnanimously
- magnanimousness
- magnate
- magnesia
- magnesian
- magnesite
- magnesium
- magnesium carbonate
- magnesium hydroxide
- magnesium oxide