Words to Describe sibilants

How sibilants often is described ("________ sibilants")

• english
• energetic
• hissing
• spanish
• colonial
• thickened
• simple
• various
• many
• retroflex
• old
• harsh
• swedish
• italian
• semitic
• indian
• analogous
• normal
• alliterative
• emphatic
• quechua
• silkiest
• corresponding
• voiced
• acceptable
• cerebral
• initial
• defective
• apical
• short
• exaggerated
• smooth
• palatalized
• palatal
• russian
• odd
• retracted
• european
• alveolar
• bactrian
• dental
• native
• lingual
• numerous
• sanskrit
• successive
• unvoiced
• medieval
• different
• syriac
• other
• phoenician
• greek
• final
• plain
• southern
• soft
• sharp
• alveopalatal
• voiceless