A dictionary of Confusable Phrases: More Than 10,000 Idioms and Collocations

on the trot • on the trots
on the trot—(coll.) 
1
. moving from place to place: Two days
on the trot carrying a big bag took its toll on me at only eight-
een. 2. (also: on the run) running away from prison, the police,
etc.: I eloped with one of the boys and we went on the trot
from the approved school. 3. (also: on the go) constantly busy
moving from one task to another: I’ve been on the trot all
morning and I’m exhausted. 4. one after the other; in succes-
sion: For three matches on the trot, he was really energetic
and successful.
Note:
The expression does not correlate in meaning with the
phrase at a trot— moving at a pace faster than a walk: He
looked both ways, then set off at a trot in the direction of the
Stones’ household.
on the trots —(U.S. sl.) having the diarrhea: Why are you
frequently visiting the lavatory, Jack? Are you on the trots?
on the up • on the up and up
on the up —(UK coll.) improving or becoming more suc-
cessful: Business was on the up, and Pete started employing
people to help him fulfill orders.
on the up and up —(U.S. coll.) 
1
. honest and trustworthy: I
kept telling her the whole thing had been strictly on the up-
and-up, but she wouldn’t listen. 2. = on the up: Since the reces-
sion ended, our business has been on the up and up.
Note: 
Neither expression fully correlates in meaning with the
phrase on the uppers—(sl., also: on one’s uppers) 
1
. reduced to
poverty; destitute: Freddie Forsyth was on his uppers. No job,
nowhere to live, no money. 2. = on the up: Ally has had her
fair share of ups and downs, so I’m keeping my fingers crossed
she is on the uppers now.
on the view • on view
on the view —on close inspection: He walked round the
three companies of horsemen, and pronounced on the view,
that Montague and Fox were duly elected.
on view —exhibited; on display: The latest model of the car
is on view at our showrooms.