Portend rhymes with:
attend, contend, distend, extend, intend, overextend, pretend, tend, amend, append, apprehend, arend, ascend, attend, backend, befriend, bend, blend, commend, comprehend, condescend, contend, defend, depend, descend, distend, echemende, end, ende, expend, extend, fend, friend, impend, intend, landsend, lend, mend, mende, misspend, offend, overextend, penned, pretend, recommend, relend, rende, reoffend, send, spend, suspend, tend, transcend, trend, unbend, wend, wende, yearend
Portend sounds like:
pardoned, partitioned, pertained, pertinent, portent, portinadi, predominant, predominate, predominated, preordained, pretend, pretended, prudent, prudente