Some choices: foolish, idiotic, fatuous, puerile
Prattle, rubbish, hogwash, baloney, scribble
Idiotic is a synonym for silly. Stupid is another synonym.
"Garbage" fits this description...
seven letter words start with E and end with the letter A?
sand silly straws
Klutz, kerplutz.
zany
Some seven letter words that start with a B include:baffledbankingbarkingbashfulbecausebelievebeneathbeggingblanketblenderblessedblisterblinkerblockerblossomblotterblastedblackenblatherblushedblunderblurtedbonfirebroughtbrittlebrisklybrieflybrotherbutterybutcherbuntingbustingbungled
Some seven letter words that end with 'ure' are:capturecensureclosureconjureculturedentureepicureerasurefailurefeaturefissurefixturegesturelectureleisuremeasuremixturenurtureobscurepastureperjurepicturepostureprocureraptureruptureseizuretexturetonsuretortureventurevulture
appeals
honesty is a seven letter word that begins with h
falling
Some seven letter words with N as the fifth letter areagainstbalancefriendspartnerqueenlyscienceseventy
Some seven letter words with three As are:alfalfabandanacassabalasagnamalariaOceaniapanaceasavanna
seven