Reinforce (verb)

1. Make (something) stronger or more solid.
2. Provide extra support or encouragement for (an idea, feeling, or action).
3. Provide with additional troops or resources.

Origin:

Late middle english (in the sense "strengthen a military force"): from old french renforcer, from re- "again" + enforcir "strengthen", from en- "in" + forcer "force".

Examples:

1. The walls were reinforced with steel beams.
2. His confidence was reinforced by the success of his first book.
3. The company reinforced its commitment to sustainability.
4. The army reinforced its position in the border.
5. Reinforce the structure with more concrete.