assibilate /a- or ə-sibˈi-lāt/ (phonetics)

To sound as a sibilant

assibilāˈtion noun

• undergraduette
• undergraduettes
• underground
• undergrounds
• undergrove
• undergroves
• undergrown
• undergrowth
• undergrowths
• underhand
• underhanded
• underhandedly
• underhandedness
• underhandednesses
• underhands
• under-hangman
• under-hangmen
• under hatches
• underhonest
• underhung
• underinsure
• underinsured
• underinsures
• underinsuring
• underinvestment