Underachieve, underestimate, undergo, understand, undertake, undress, unearth, unfasten, unfold, unify, unite, unlock, unpack, update, upgrade, uphold, upset, use and utilize are verbs. They begin with the letter u.
unload
Unite )
use
Some verbs that start with E are:eatearnekeevenedgeendenergizeelevateenbalmenableenteremancipateevolveemployembraceembroilengageeliminateemphasizeemergeequateevaluateendureeducateease
Unifier (first group verb, conjugates as "aimer"), unir (second group verb, conjugates as "finir").
nouns:Uncle JimUtahumbrellaunicycleumpireuniverseukuleleverbs:useunderstandunderlineunbuttonunlockuncoverunderlineadjectives:uniqueuglyusefuluniversaluncommonunanimousunusual
Begin
Some verbs that begin with the letter i:identifyillustrateimplementimproveimproviseinduceinfiltrateinfluenceinforminitiateinjectinjureinlayinnovateinsinuateinspectinspireinstallinstigateinstituteinstructintegrateinterfereinterrogateinterpretinterruptinterviewintroduceinventinventoryinvestigateinviteirritateitch
FightFlyFlick
Here's one 9-letter verb with U as the second letter: Duplicate There may be more, but that's a start...
bouncing
fishfightfirefallflingflirtfortifyflyfearfeelfailfartfleefastenfloatflossfellform