What is the opposite of trochaic meter?

The opposite of trochaic meter is iambic meter. A trochee is a metrical foot used in poetry that consists of a stressed syllable follow by an unstressed one, while an iamb is the reverse.

This line from William Shakespeare's "A Midsummer Night's Dream" exemplifies the iamb: "But I will wed thee in another key." The first two words, "But I," are an iamb because "but" is unstressed and "I" is stressed. The line continues with four more iambs. This line from Sir John Suckling's "Song" is in trochaic meter: "Why so pale and wan, fond Lover?" "Why" is stressed and "so" is unstressed, and this trochaic pattern repeats four more times.