pullulate /pulˈū-lāt/

1. To sprout
2. To sprout or breed abundantly
3. To teem
4. To increase rapidly

pullulāˈtion noun

• thrift store
• thrifty
• thrill
• thrillant
• thrilled
• thriller
• thrillers
• thrillier
• thrilliest
• thrilling
• thrillingly
• thrillingness
• thrillingnesses
• thrills
• thrilly
• thrimsa
• thrimsas
• thrips
• thripses
• thrissel
• thrist
• thristle
• thristy
• thrive
• thrived