put your foot down

• assertDeclare confidently true
• insistAssert with determination
• demandForceful request or requirement
• refuseReject or garbage
• stompTread heavily

pedal · authority · boundary · firmness · resolve · stubborn · ground · stand · ultimatum · enforce · declare · accelerate · gas · throttle · floor · discipline · stern · unyielding

• body idiomsheart of gold, heart of stone, cold heart, warm heart, soft heart
• decisionschoice, make a decision, choices, yes, no
• idiomstime flies, hit the sack, seize the day, ring a bell, break a leg
• powerauthority, electric power, nuclear power, solar power, wind power
• perseverancepersist, never give up, tenacity, hang in there, endurance