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

• interrogatory
• in terrorem
• interrupt
• interrupted
• interrupted cadence
• interruptedly
• interrupter
• interrupters
• interruptible
• interrupting
• interruption
• interruptions
• interruptive
• interruptively
• interruptor
• interruptors
• interrupts
• fistic
• fistical
• fisticuff
• fisticuffs
• fistier
• fistiest
• fisting
• fist-law