strengthen

To strengthen something is to make it more powerful, solid, or effective. Think of building muscles: each workout makes your body stronger. But you can also strengthen relationships by spending quality time together, or strengthen an argument by adding supporting evidence. It is about making things better at being what they already are. A weak bridge needs strengthening before cars can cross it safely. A shy person might work to build stronger confidence. You do not strengthen something by replacing it. You build on what is already there.

The word "strengthen" means to increase the power, effectiveness, or resilience of something. It suggests taking something that already exists and making it better able to handle challenges or do its job well.

You can strengthen physical things: "The engineers strengthened the dam to protect against flooding." You can also strengthen abstract things: "Regular practice will strengthen your memory," or "A shared experience can strengthen a friendship."

Strengthen is not about creating something new, but about improving what is already there. It often suggests adding support, reinforcing what already exists, or building up a quality that is present but not strong enough. A detective might try to strengthen a case with more evidence. A leader might work to strengthen morale within a team. A doctor may prescribe medicine to strengthen a patient's immune system.

The opposite of strengthening is weakening. Just as weakness can appear in many forms, strength can be increased in many kinds of things too.

So whether you are talking about physical structures, personal qualities, or abstract ideas, to strengthen means to bolster, reinforce, and make something more robust by building on what is already there.