Stipulate rhymes with:
manipulate, copulate, depopulate, manipulate, populate, accumulate, articulate, calculate, circulate, coagulate, copulate, depopulate, emulate, formulate, innoculate, inoculate, manipulate, miscalculate, overregulate, populate, recalculate, reformulate, regulate, reregulate, speculate, stimulate, strangulate, tabulate
Stipulate sounds like:
seatbelt, sextuplet, southfield, stability, stapled, stifled, stipulated, suitability