A lot means:
Very many, a large number -- We have a lot of cats at our house
very much, -- She likes him a lot.
The word 'obviously' is an adverb, a word that modifies a verb; meaning easily perceived or understood, unmistakably, clearly. Example:He obviously cares a lot about you.
Meaning you might - or might not , have something.
lots means lots of one certain thing, a lot means a lot of many things
the meaning of worthless is without worth of no use ,importance or value adverb.
A few. There is a smidgin more in a lot than there is in many.
what is the meaning of an improvident lot
People often say 'lot' or 'job lot' meaning - a lot of Lego.
packing a lot of meaning into a small space
Its a party
There is a lot of people, meaning that a lot of resources are being used
Packing a lot of meaning into a small space.
you get in to trouble a lot of the time.
Rich ..with lot of money.
It's not an idiom because you can figure out the meaning by thinking. A PhD is a college degree meaning you have studied a subject intensively and know a lot about it. If you are a doctor of love, you know a lot about love.
to say eh a lot
to be in lot of trouble
"Pitches in" is a phrase meaning 'helps a lot'.