past

1 past /ˈpæst/ Brit /ˈpɑːst/ adjective
1 past
/ˈpæst/ Brit /ˈpɑːst/
adjective
Britannica Dictionary definition of PAST
1 
always used before a noun : having existed in a time before the present : from, done, or used in an earlier time
2 
always used before a noun — used to refer to a time that has gone by recently
3 
always used before a noun — used to say what someone or something was in the past
4 
— used to describe something that ended or was completed in the past
2 past /ˈpæst/ Brit /ˈpɑːst/ preposition
2 past
/ˈpæst/ Brit /ˈpɑːst/
preposition
Britannica Dictionary definition of PAST
1 
: at the farther side of (something) : beyond (a particular place)
2 
: up to and beyond (a person or place)
3 
: later than (a time)
4 
a  : older than (an age)
b  : beyond the age for (something)
5 
: beyond or no longer at (a particular point)

I wouldn't put it past (someone)

— used to say that you would not be surprised if someone did something bad

past it

British, informal
: too old to do something or to be useful
3 past /ˈpæst/ Brit /ˈpɑːst/ noun
plural pasts
3 past
/ˈpæst/ Brit /ˈpɑːst/
noun
plural pasts
Britannica Dictionary definition of PAST
1 
[noncount] : an earlier time : the time before the present — usually used with the
— see also live in the past at 1live
2 
[count] : the events of a person's life, of a place, etc., before the present time — usually singular
3 
the past grammar : past tense

blast from the past

— see 1blast
4 past /ˈpæst/ Brit /ˈpɑːst/ adverb
4 past
/ˈpæst/ Brit /ˈpɑːst/
adverb
Britannica Dictionary definition of PAST
: to and beyond a certain point or time