underhold

Example:She decided to support the project, believing it would lead to long-term benefits.

Definition:To give or provide (help, aid, etc.) to a person, a group, or a cause, in various ways such as backing, defending, sustaining, or financially aiding

Example:His team had to sustain the momentum for the next few matches.

Definition:To keep up; maintain (a state, activity, etc.) without extra effort or change

Example:We must maintain the privacy and confidentiality of our clients.

Definition:To keep in existence or continuance; preserve the existence, unity, or condition of; keep intact