Breeze is one six letter synonym of air. So is Oxygen.
drousy
starts
polite
loathe, detest
warmly
drowsy
Logic
A thesaurus.
jumble, muddle
A six letter synonym for 'dawn' is advent.
Heroic is a 6 letter word. It is a synonym for brave.
A six letter synonym for 'alfresco meal' is picnic.