ils

1. they (male or mixed group)
2. (informal) they (female)

auront

third-person plural future of avoir

douze

twelve

enfants

plural of enfant

dont

1. of/from whom/which, whose; whereof
2. by which
3. Denotes a part of a set, may be translated as "including" or such as in some situations.

six

six

jusqu'à

1. until
2. to (used together with depuis to indicate a time range)
3. up to

adulte

• Adj

  adult

• Noun