Take your pick!
January: The other three are not at the start of the modern calendar.
February: The other three contain 31 days.
March: The other three contain 3 vowels.
December: The other three contain "ar".
lock.....
The odd one put among skunk, warthog, meerkat, and hyena is skunk because it is not found in Africa like the rest.
The odd one out among butter, milk, cream, and cheese is milk because the rest are 6-letter words, but it is a 4-letter word.
November, because it has 30 days, while the others have 31 days.
Odd + even = odd
Brass is the odd one out among aluminium, brass, copper, and iron. Brass is an alloy while the other three are elements.
odd
Vicodin is the only medicine in the list. The other three things are mechanical things.
intrepidity
One is an odd number
The odd one out makes the even one in making the odd and even even one odd until the even ones are odd including the ones that aren't even
The sum of one odd number and one even number is another odd number.