constant adj.
VERBS be | remain, stay The level of unemployment remains fairly constant at around 10%. | hold sth (technical), keep sth All variables except one must be held constant. The temperature must be kept constant.
ADV. remarkably | absolutely | almost, nearly, virtually | fairly, reasonably, relatively | more or less, roughly
PREP. across These figures were virtually constant across the 1991 and 2001 censuses.