1
give in
disappoint
let down
when someone begins to like something
grown on (someone)
get on well with someone
hit it off (with someone)
reach an expected standard
live up to
investigate
look into
take revenge
admit
own up (to something)
miss out (on something)
compensate for
make up for (something)
invent
make (something) up (something)
tell someone a secret
let (someone) in on (something)
continue to do something
keep (something) up (something)
delay
hold (something) up (something)
keep
hang onto (something)
complete a promise or plan
go through with (something)
break a promise
go back on (something)