ideally

The word “ideally” means in the best or most perfect way possible. In plain terms, used to describe what would happen under perfect conditions.

“Ideally” is pronounced eye-DEER-lee (/aɪˈdi.ə.li/ in IPA).

Here is “ideally” used in a sentence: “Ideally, the team would finish the project a week early.”

The opposite of “ideally” — its antonyms — is nonideally.

“Ideally” is an adverb.

“Ideally” is a fairly common word in modern English, usually learned at around the B2 level.

“Ideally” has 2 distinct senses listed in this dictionary. The most common is: in the best or most perfect way possible.

"Ideally" can mean either in the best or most perfect way possible, or in a way that only exists as an idea or theory rather than in practice, which overlaps with "theoretically." However, "ideally" more often expresses a preferred best-case outcome, while "theoretically" more neutrally describes something considered in theory without necessarily implying it's the best option.

When placed at the start of a sentence, "ideally" typically signals the speaker's preferred or best-case scenario before acknowledging that reality may differ, as in "Ideally, we'd finish today." This usage sets up an expectation that practical constraints may follow.

Not necessarily. "Ideally" can simply describe the best or most perfect way of doing something without implying failure, but its second sense specifically marks something as existing only in theory rather than practice. Which meaning applies depends on the surrounding context.