KITTLEST
Adjective
kittlest
superlative form of kittle: most kittle
Source: Wiktionary
KITTLE
Kit"tle, v. i. Etym: [Cf. Kit a kitten.] (Zoöl.)
Definition: To bring forth young, as a cat; to kitten; to litter. [Prov.
Eng. & Scot.]
Kit"tle, v. t. Etym: [Cf. AS. citelian; akin to D. kittelen, G.
kitzeln, Icel. kitla, Sw. kittla, kittsla, Dan. kildre. Cf. Tickle.]
Definition: To tickle. [Prov. Eng. & Scot.] [Written also kittel.]
Halliwell. Jamieson.
Kit"tle, a.
Definition: Ticklish; not easily managed; troublesome; difficult; variable.
[Prov. Eng. & Scot.] Halliwell. Sir W. Scott.
Source: Webster’s Unabridged Dictionary 1913 Edition