po-faced /pōˈfāst/ (informal)

1. (also shortened to po) stupidly solemn and narrow-minded
2. Stolid, humourless

• mantid
• mantids
• mantilla
• mantillas
• mantis
• mantises
• mantissa
• mantissas
• mantis shrimp
• mantis shrimps
• mantle
• mantled
• mantle rock
• mantles
• mantlet
• mantlets
• mantling
• mantlings
• manto
• mantoes
• man to man
• mantos
• Mantoux test
• mantra
• mantram