The whole thing
Encoding Strategies:
linguistic

total
the whole amount
+
-o
adjective suffix
Todo means all and is related to the English word total0, which means the whole amount of something0.
todo
all, whole, entire
The total of something.
Se bebió toda la lecheHe drank all the milk
Hay que ver el todo, no solo las partesYou have to look at the whole, not just the parts
every, each
The total is made up of every individual piece.
Viene a verme todos los díasHe comes to see me every day
Todos los detalles importanEvery detail matters
todos
everyone, everybody, all of them (pronoun)
The total of all people, or 'everyone'.
Todos saben que están saliendoEveryone knows they're dating
Aquí me conocen todosEverybody knows me here
del todo
completely, entirely, at all
Used to express complete or total degree. 'Del todo' adds 'de' to say you're coming 'from' a place of completeness.
No estoy del todo seguroI'm not entirely sure
No lo entiendo del todoI don't understand it completely
sobre todo
especially, above all, most of all
Used to single out the most important thing out of everything, just like the English phrase "above all."
Me encanta la música, sobre todo el jazzI love music, especially jazz
Sobre todo, no pierdas la calmaAbove all, don't lose your cool