Interestingly, there are some sentences using "only until", for example:
You can dance professionally only until you're about 30.
The meaning of this sentence is quite clear to me:You can't dance like a pro until you are over 30. But not the ones of the following sentences/phrases:
Handsome, stubby-legged pup has only until tomorrow
(Is it a correct expression?)Savings were made by increasing the electricity supply only until it met specific development needs.
(Increase the supply only, until…,or increase the supply, only until…?)Eating Slowly and Only Until Satisfied
(until, or only until? it's quite confusing to me.)Eternal peace lasts only until the next war
(It seems easy. But then the first sentence above should be: you can dance like a pro only before you are 30?)
A little puzzle…
Best Answer
Your understanding here is the opposite of the actual meaning.
An until [TIMEPOINT] phrase marks the end of a state or activity. (See this question.)
Adding only to this merely emphasizes that the state or activity does not or cannot extend beyond TIMEPOINT. It is typically employed when the time limit is especially rigorously enforced or is shorter than expected or desired.
Consequently, "You can dance professionally only until you are about 30" means that every dancer's career ends at about 30, when most people pass their physical peak.
Similarly: