The phrase "acceptable substitutes for" is correct and usable in written English.
You can use it when discussing alternatives that can be used in place of something else, particularly in contexts like food, products, or methods.
Example: "If you can't find the original ingredient, there are several acceptable substitutes for it, such as yogurt or sour cream."
Alternatives: "suitable alternatives to" or "valid replacements for".
But it's really more like a cleaning crew who believes that dimming the lights and sweeping the dirt under the rug are acceptable substitutes for what's really needed: a mop, a bucket and some industrial-strength disinfectant.
For CUNY students to get campus workfare assignments, New York City's welfare agency would have to approve those sites as acceptable substitutes for its own assignments, like cleaning city parks and streets.
In the United States, for example, the courts held that e-mail records of the White House during the Ronald Reagan administration should not be destroyed, because paper printouts are not acceptable substitutes for the electronic records.
The Supreme Court has taken a somewhat more flexible view of the "suspension clause," ruling in two 20th century cases that there could be acceptable substitutes for habeas corpus as long as the substitutes offered remedies "commensurate" with those that prisoners could receive from a traditional writ.
The final requirements are published with sample programs in the Handbook for Undergraduate Engineering Programs. 1 CS 109, MS&E 120, MS&E 220, EE 178, and CME 106 are acceptable substitutes for STATS 116. 2 Research projects require pre-approval of BMC Coordinators.
Other types of coverage, including COBRA, are not acceptable substitutes for Medicare.
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Because this is the thing: expressions of anger are often seen as an acceptable substitute for men, a simple like-for-like substitution in lieu of actually having an emotion or externalising a feeling.
Or consider cookie dough an acceptable substitute for cauliflower?
Dealers are known to bend the rules: Go Fish is an acceptable substitute for blackjack.
Where a biscuit tin is a perfectly acceptable substitute for a letterbox.
