1. Without warning or announcement
   - unannounced, unheralded

See also: unexpected

• permutableness
• permutation
• permute
• Pernambuco
• pernambuco wood
• pernicious
• pernicious anaemia
• pernicious anemia
• perniciously
• perniciousness
• pernickety
• pernio
• Pernis
• Pernis apivorus
• Pernod
• pernyi moth
• Perodicticus
• Perodicticus potto
• Perognathus
• Perognathus flavescens
• Perognathus flavus
• Perognathus hispidus
• Peromyscus
• Peromyscus eremicus
• Peromyscus gossypinus