What are some exceptional palindromes, tautonyms, head'n'tail words?

language/english/spelling/letter.pattern/entire.word Restored

This entry was in an earlier release of the archive and is restored here.

Problem

What are some exceptional palindromes, tautonyms, head'n'tail words?

Show solution

  longest palindromes  KINNIKINNIK (11)
   for each beginning letter  ADINIDA, BOOB, CIVIC,
    DEIFIED, ECCE, ?, GAG, HAGIGAH, IGIGI, ?, KINNIKINNIK, LEVEL, MALAYALAM,
    NAURUAN, OTTO, PEEP, QAZAQ, REVIVER, SEESEES, TERRET, ULU, VAV, WOW, ?,
    YARAY, ?
   for each middle letter  REPAPER, SAWBWAS, ECE,
    MURDRUM, PEP, DEIFIED, SAGAS, AHA, REVIVER, KAJAK, KINNIKINNIK, ALA, KUMUK,
    ADINIDA, BOB, SAPAS, ?, NAURUAN, SEESEES, ROTOR, ALULA, CIVIC, EWE, SEXES,
    MALAYALAM, KAZAK
  longest tautonym  TANGANTANGAN (12)
   for each letter  ATLATL, BELLABELLA, CHIQUICHIQUI,
    DUMDUM, EE, FROUFROU, GANGGANG, HOTSHOTS, IPILIPIL, JUJU, KHUSKHUS,
    LAPULAPU, MAHIMAHI, NAGNAG, OO, PIOUPIOU, QUIAQUIA, RIRORIRO, SWEESWEE,
    TANGANTANGAN, ULAULA, VALVAL, WALLAWALLA, ?, YARIYARI, ZOOZOO
  longest head 'n' tail ARGLEBARGLE 
   for each middle letter  MUCKAMUCK,
    ARGLEBARGLE, OVERCOVER, OKEYDOKEY, AREAR, ?, MAGMA, OUTSHOUTS, TRINITRIN,
    ANJAN, EKE, KHALKHA, PAMPA, TARANTARA, INGOING, APA, ?, VERVE, HOTSHOT,
    ICTIC, SHUSH, EVE, ABWAB, MANXMAN, EYE, ?