Est
Est , noun and adverb
East. [Obsolete] — Chaucer
-est (-est)
[Anglo-Saxon -ost, -est; akin to German -est, -ist, Icelandic -astr, -str, Gothic -ists, -ōsts, Sanskrit -ishtha.]
A suffix used to form the superlative of adjectives and adverbs; as, smoothest; earl(y)iest.