Does anyone besides my husband insist on adding an -ed to sour cream? Etymonline dates "sour cream" to 1855, but has no mention of "soured", so I don't think this is analogous to "iced tea" or "ice cream". Is this a regional thing? He grew up in New England, but English is not his parents' first language, so his accent is more Uncle Walter than This Old House.
Learn English – “Sour cream” versus “soured cream”
adjectivesdialectsparticiplesphrasesword-choice
Related Solutions
It is a question of grammar. You're looking for a word to qualify the way A and B are used, in the construct “to verb A and B qualifier”. This qualifier has to be an adverb (“a word or phrase that modifies or qualifies an adjective, verb, or other adverb or a word-group”).
Now, you want to express parallelism. “Parallel” itself is an adjective, as well as a noun and a verb. It is not an adverb, and as such, cannot be used in “using A and B parallel”. The natural adverb that derives from parallel is parallelly; though it's not exactly very common in general usage, it does exist and is attested in multiple (though not all) dictionaries. So, “using A and B parallelly” works.
Regarding in parallel, it so happens that it is a common phrase meaning “occurring at the same time and having some connection”. It may be more commonly used than parallelly, which is why it would feel very natural in your sentence, but both are correct.
The normal American English would be sleep-in if you plan on doing it on purpose or over-sleep if you do it on accident. Confusingly, sleep-over is different and refers to sleeping at somebody elses house. In the usage you describe, sleep-out is just a variant of sleep-in. The references I found were either British or ESL usage that looks like a second-language mistake. It doesn't look like it's a very common variant, you should stick to sleep-in. Here's the ngram
Related Topic
- Learn English – Which is correct: “I am drinking ice cream” or “I am eating ice cream”
- Etymology – What is the Process that Turned ‘Iced Cream’ into ‘Ice Cream’?
- Learn English – “Supposed” versus “expected”
- Word-Choice – How to Rephrase ‘Cream Flavoured Cream’?
- Word Choice – Distinguishing ‘Magic’ from ‘Magical’
- Phrases – What Is the Reverse Phrase of ‘Sour Grapes’?
Best Answer
After a quick Google Ngram search, soured cream appears to be used very little. Personally, I have never heard it used. On the product itself, (in Canada), the label declares it to be sour cream. There are 39.8 million hits for sour cream on Google, and 0.6 million for soured cream. If we change the Google Ngram to British English, soured cream's popularity increases, so I assume that this is mainly a British expression. Changing it to American English shows almost no results for soured cream.