▁typ able ▁using ▁only ▁the ▁top ▁row ▁of ▁letters ▁has ▁ 1 1 ▁letters : ▁ru pt ure wort . ▁Similar ▁words ▁with ▁ 1 0 ▁letters ▁include : ▁pe pper wort , ▁perpet u ity , ▁propriet or , ▁requ iet ory , ▁re per toire , ▁tri pert ite , ▁pour rit ure ▁and ▁type writer . ▁The ▁word ▁te et ert ot ter ▁( used ▁in ▁North ▁American ▁English ) ▁is ▁longer ▁at ▁ 1 2 ▁letters , ▁although ▁it ▁is ▁usually ▁sp elled ▁with ▁a ▁hy phen . ▁ ▁The ▁longest ▁using ▁only ▁the ▁middle ▁row ▁is ▁sh ak al sh as ▁( 1 0 ▁letters ). ▁N ine - letter ▁words ▁include ▁flag falls , ▁gal ah ads ▁and ▁al f alf as . ▁ ▁Since ▁the ▁bottom ▁row ▁contains ▁no ▁v ow els , ▁no ▁standard ▁words ▁can ▁be ▁formed . ▁Exception s ▁might ▁include ▁Z zz , ▁seen ▁in ▁some ▁diction aries ▁to ▁denote ▁sleep , ▁or ▁m , ▁the ▁cl it ic ▁form ▁of ▁my . ▁ ▁The ▁longest ▁words ▁typ able ▁by ▁altern ating ▁left ▁and ▁right ▁hands ▁are ▁ant iske ptic ism ▁and ▁le uc ocy to zo ans ▁respectively . ▁ ▁On ▁a ▁D vor ak ▁keyboard , ▁the ▁longest ▁" left - hand ed " ▁words ▁are ▁e pop oe ia , ▁j ip ij apa , ▁pe ek ap oo , ▁and ▁qu ia quia . ▁Other ▁such ▁long ▁words ▁are ▁pap aya , ▁K ik uy u , ▁op