When the multi-syllabic option is on, the button will illuminate and the intelligent rhyme will display rhyme mates that match two or more syllables whenever possible. Polysyllabic rhyme mates are indicated by a green-colored multi-syllabic button. If the search word offers only monosyllabic rhyme mates, the multi-syllabic button will turn red.
The symbol in the center of the multi-syllabic button will inform you whether the search word is feminine or masculine. The gender classification depends on how the syllables of the search word are stressed. Masculine words have the stress on the last syllable. Feminine words have the stress on the second to last syllable or prior.