Well, it doesn't seem like an oxymoron. My favourite example is 'Military intelligence' - a contradiction in terms.
A tautology is using too many words, and I don't think it's one of them either.
I'm struggling to say what it is. There are fewer passengers, and the 'many' describes the degree of the reduction.
For example, there are many fewer passengers on our local trains, to the extent that I'm surprised they are still running a full service. If there were only a few fewer, then that would still be necessary.
Like Savvy_Sue, I don't think either term you've given is correct.
I agree there are situations where I'd say 'far fewer' but there are others where that just wouldn't sound right, eg in the example I gave, you could say 'far fewer passengers, to the extent that I'm surprised ...' but you might also say 'there are so many fewer passengers, to the extent that I'm surprised ...' and you definitely can't say 'so far fewer' you have to say 'so many fewer'.
Just as long as no-one starts on Fronted Adverbials ...
I found a technical explanation: Many is an adjective, while much is an adverb. As such, many cannot modify the adjective fewer; only an adverb can modify an adjective. Much fewer is simply more correct than many fewer, despite its cacophony. Many modifies a noun: many apples. Much modifies the adjective: much fewer apples or far fewer apples. https://english.stackexchange.com/questions/371335/much-many-fewer
I have osteoarthritis in my hands so I speak my messages into a microphone using Dragon. Some people make "typos" but I often make "speakos".
I found a technical explanation: Many is an adjective, while much is an adverb. As such, many cannot modify the adjective fewer; only an adverb can modify an adjective. Much fewer is simply more correct than many fewer, despite its cacophony. Many modifies a noun: many apples. Much modifies the adjective: much fewer apples or far fewer apples. https://english.stackexchange.com/questions/371335/much-many-fewer
Would “... many [plural countable noun] fewer ...” also be correct in the right context?
I found a technical explanation: Many is an adjective, while much is an adverb. As such, many cannot modify the adjective fewer; only an adverb can modify an adjective. Much fewer is simply more correct than many fewer, despite its cacophony. Many modifies a noun: many apples. Much modifies the adjective: much fewer apples or far fewer apples. https://english.stackexchange.com/questions/371335/much-many-fewer
Would “... many [plural countable noun] fewer ...” also be correct in the right context?
”A punnet holds many apples fewer than a barrel.”
I think that a qualified person would need to comment. We would say, How MANY apples are in the barrel? How MUCH apple juice is in the barrel? How MANY gallons of apple juice are in the barrel? Therefore, "a punnet holds MUCH less apple juice than a barrel [does]" seems as correct as "a punnet holds MANY fewer apples than a barrel [does]".
I have osteoarthritis in my hands so I speak my messages into a microphone using Dragon. Some people make "typos" but I often make "speakos".
Replies
A tautology is using too many words, and I don't think it's one of them either.
I'm struggling to say what it is. There are fewer passengers, and the 'many' describes the degree of the reduction.
For example, there are many fewer passengers on our local trains, to the extent that I'm surprised they are still running a full service. If there were only a few fewer, then that would still be necessary.
Just as long as no-one starts on Fronted Adverbials ...
Many is an adjective, while much is an adverb. As such, many cannot modify the adjective fewer; only an adverb can modify an adjective. Much fewer is simply more correct than many fewer, despite its cacophony. Many modifies a noun: many apples. Much modifies the adjective: much fewer apples or far fewer apples.
https://english.stackexchange.com/questions/371335/much-many-fewer
Words, words, they're all we have to go by!.
(Pity they are mangled by this autocorrect!)
”A punnet holds many apples fewer than a barrel.”
We would say, How MANY apples are in the barrel? How MUCH apple juice is in the barrel? How MANY gallons of apple juice are in the barrel?
Therefore, "a punnet holds MUCH less apple juice than a barrel [does]" seems as correct as "a punnet holds MANY fewer apples than a barrel [does]".