strengthen

/ˈstrɛŋkθən/
verb
  1. To make something physically stronger or more powerful.
    • The coach designed a program to strengthen the team's defense.
    • Regular exercise helps strengthen your muscles and bones.
    • They used steel beams to strengthen the old building.
  2. To make something more effective, more resilient, or more likely to succeed.
    • The company hired a consultant to strengthen its marketing strategy.
    • The new law will strengthen protections for the environment.
    • We need to strengthen our relationship by spending more time together.
  3. To become stronger or more powerful.
    • Her resolve strengthened after she heard the inspiring speech.
    • The wind began to strengthen as the storm approached.
    • The economy is expected to strengthen over the next year.