1. In an immature manner
   "his teenage son still behaves very immaturely"
   - jejunely

See also: immature

Antonym: maturely

• multiplicative inverse
• multiplicatively
• multiplicity
• multiplied
• multiplier
• multiplier factor
• multiplier onion
• multiply
• multipolar
• multipotent
• multiprocessing
• multiprocessor
• multiprogramming
• multipurpose
• multiracial
• multistage
• multistage rocket
• multistorey
• multistoried
• multistory
• multitask
• multithreading
• multitude
• multitudinous
• multitudinousness