stedfast an obsolete spelling (Shakespeare, Milton, etc) of steadfast

• superhives
• superhuman
• superhumanise
• superhumanised
• superhumanises
• superhumanising
• superhumanities
• superhumanity
• superhumanize
• superhumanized
• superhumanizes
• superhumanizing
• superhumanly
• superhumeral
• superhumerals
• superimportant
• superimpose
• superimposed
• superimposes
• superimposing
• superimposition
• superincumbence
• superincumbency
• superincumbent
• superincumbently