<synset id="v00581355" type="v">
<lex_filenum>30<lex_filenum/>
<word lex_id="0">undulate<word/>
<pointer refs="v00109660">Hypernym<pointer/>
<frame f_num="1"/>
<def>increase and decrease in volume or pitch, as if in waves<def/>
<example>The singer's voice undulated<example/>
<synset/>