Also, take account of; take into consideration. Bear in mind, consider, allow for, as in We have to take into account that ten of the musicians were absent, or It's important to take account of where the audience is coming from, or When you take into consideration the fact that they were founded only a year ago, they've done very well. Take into consideration is the oldest of these expressions, dating from the mid-1500s. Take into account and take account of date from the late 1600s. The antonyms, leave out of account or take no account of, mean “ignore, pay no attention to,” as in They've left the most important item out of account. [Second half of 1800s] All of these idioms use account in the sense of “reckoning” or “calculation,” and consideration in the sense of “regard for the circumstances.”