mantendrá

third-person singular future indicative of mantener

mantener

1. (transitive) to keep
2. (transitive) to maintain, to support
3. (transitive) to sustain, to preserve, to retain, to uphold
4. (transitive) to maintain, continue, to keep up
5. (transitive) to stay, to remain
6. (reflexive) to maintain, to keep, to stay, to remain
7. (reflexive) to stand, to hold, to remain, to continue (e.g. hold firm, stand strong, stand together, stand on one's feet)
8. (reflexive) to stick to (e.g. stick to one's guns)
9. (reflexive) to be maintained, to be retained, to be sustained

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Hyphenated as

man‧ten‧drá