strive
endeavoured
endeavouring
endeavours
achievement
aim
ambition
aspiration
devotion
effort
endeavor
exertion
inquiry
labors
labour
perseverance
pursuit
regret
struggle
undertake
zeal
Trevor
bever
clever
ever
forever
haver
however
kever
lever
never
sever
whatever
whatsoever
whenever
wherever
whichever
whoever
whomever
whomsoever
whosoever