Advanced, Avant-Garde, Broad, Broad-minded
Author: simileguru
as level as a pond
Akin, Aligned, Alike, Calm, Commensurate
as lean as Sancho’s ass
Angular, Anorexic, Barren, Beanpole, Bony
as lazy as a toad
Apathetic, Asleep on the job, Careless
as lax as cut string
Any way, Asleep on job, Behindhand, Broad
as lawless as the stormy wind
Illegal, Illegitimate, Illicit, Prohibited, Taboo
as lasting as the pyramids
Abiding, Constant, Continual, Continuing
as industrious as an ant
Active, Assiduous, Ball of fire, Burning, Busy
as indolent as an old bachelor
Drony, Easygoing, Faineant, Idle, Inactive
as inconstant as the moon
Capricious, Changeful, Erratic, Fickle, Flickering
as hopeful as the break of day
Anticipating, Anticipative, Assured, At ease
as honest as a mirror
Above-board, Authentic, Bona fide
as hollow as a drum
Alveolate, Arched, Carved out, Cavernous, Cleft
as hoarse as a raven
Blatant, Breathy, Cracked, Croaking, Croaky
as high as the stars
Aerial, Alpine, Altitudinous, Big, Colossal