How to Say "to bolster" in Spanish
The Spanish word for “to bolster” is “fortalecer” — B1 level. This is a very common word in everyday Spanish.

Examples
Hago ejercicio todos los días para fortalecer mis músculos.
I exercise every day to strengthen my muscles.
Queremos fortalecer la amistad entre nuestros países.
We want to strengthen the friendship between our countries.
La nueva ley busca fortalecer la economía local.
The new law seeks to bolster the local economy.
The 'ZC' Rule
When a verb ends in '-ecer', the 'c' changes to 'zc' before an 'o' or an 'a'. This is why we say 'yo fortalezco' instead of 'fortaleco'.
Direct Objects
This verb usually needs a 'target' (a person or thing being strengthened). If that target is a specific person, remember to use the 'personal a', like in 'Quiero fortalecer a mi equipo'.
Forgetting the 'z'
Mistake: “Yo fortaleco mi espalda.”
Correction: Yo fortalezco mi espalda. Always add the 'z' in the 'yo' form of the present tense to keep the sound consistent.
Related Translations
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