Answer: pledge

AnswerCrossword Clue
PLEDGE

Vow

PLEDGE

Prospective fraternity member

PLEDGE

Promise

PLEDGE
Word of honor
PLEDGE
Aid a fund drive
PLEDGEFrat candidate
PLEDGEPolish brand
PLEDGEOath
PLEDGEClassroom recitation
PLEDGEFurniture care brand
PLEDGEFraternity brother-to-be
PLEDGEProspective sorority member
PLEDGEFrat newbie
PLEDGETelethon promise
PLEDGEPre-initiate
PLEDGESolemn promise
PLEDGESorority hopeful
PLEDGEWould-be frat member
PLEDGEGuaranty.
PLEDGE"I ... allegiance to the Flag . . . "
PLEDGEPromised donation.
PLEDGEPromise.
PLEDGEToast.
PLEDGEVow.
PLEDGEFraternity prospect
PLEDGEPawn
PLEDGEAssurance
PLEDGEFraternity initiate
PLEDGEGuarantee
PLEDGEPromise solemnly
PLEDGEHostage
PLEDGEWarranty
PLEDGEBrother-to-be
PLEDGESchool recital
PLEDGESecurity
PLEDGE... of Allegiance
PLEDGEAllegiance avowal
PLEDGEPublic TV request
PLEDGEPromise to PBS
PLEDGEPublic TV donation