provided
v.v. on the condition that something else happens first. You use this when you want to say that one thing is only possible if another thing is true.
v. on the condition or understanding that; if and only if. Functions as a subordinating conjunction to introduce a conditional clause.
You can go to the party provided you finish your homework.
The bank will approve the loan provided that the applicant can prove a steady source of income.
The merger will proceed as scheduled provided that the regulatory body finds no evidence of anti-competitive behavior during its final review of the company's internal documents.
Often followed by 'that', though 'that' is frequently omitted in speech. It typically introduces a requirement that must be met for the main clause to happen.
I will go provided if you go.I will go provided you go.Provided already carries the meaning of 'if'; using both together is redundant.