i Register
In some senses, constant is marked as obsolete, rare. Watch for register when choosing this word.
VERBS
be
remain, stay
Her interest in music has stayed constant since she was a child.
hold sth
She held her speed constant throughout the entire marathon race.
keep sth
We kept the room temperature constant throughout the experiment so the results would be accurate.
ADV
remarkably | absolutely | almost, nearly, virtually | fairly, reasonably, relatively | more or less, roughly
PREP
across
The temperature remained constant across all rooms in the house throughout the winter.