providing
v.v. on the condition that something else happens. You use it to say that one thing is only possible if another thing is true.
v. on the condition or stipulation that; if. Functions as a subordinating conjunction to introduce a necessary condition for a result.
You can go to the party providing you finish your homework first.
The bank will approve the loan providing the applicant can show proof of a steady income for the last two years.
The merger will proceed as scheduled providing that all regulatory hurdles are cleared and the shareholders vote in favour of the new board members.
Often followed by 'that' in formal writing, though 'that' is frequently omitted in speech. Functions similarly to 'provided' or 'if'.
I will go providing if it is sunny.I will go providing it is sunny.Providing already means 'if' — using both together is redundant.