nurture
Meaning: to assist the development of
Usage: Although Serena had never watered the plant, which was about to die, Javier was able to nurture it back to life.
abet
Meaning: to aid, help, encourage
Usage: The spy succeeded only because he had a friend on the inside to abet him.
validate
Meaning: to confirm, support, corroborate
Usage: Yoko’s chemistry lab partner was asleep during the experiment and could not validate the accuracy of her methods.
corroborate
Meaning: to support with evidence
Usage: Luke’s seemingly outrageous claim was corroborated by witnesses.
buttress
Meaning: to support, strengthen, or hold up
Usage: The wooden beams buttressed the old roof during repairs.