181. Indolent, Lazy

Indolent: Avoiding activity
Lazy: Unwilling to work

182. Inept, Clumsy

Inept: Lacking skill
Clumsy: Awkward

183. Infamy, Disgrace

Infamy: Notoriety for evil
Disgrace: Loss of respect

184. Inimical, Hostile

Inimical: Harmful
Hostile: Opposed

185. Inscrutable, Unfathomable

Inscrutable: Impossible to understand
Unfathomable: Impossible to measure

186. Insipid, Bland

Insipid: Lacking flavor
Bland: Not interesting

187. Intrepid, Fearless

Intrepid: Brave
Fearless: Without fear

188. Inundate, Flood

Inundate: Overwhelm with water
Flood: Overflow

189. Irascible, Testy

Irascible: Easily angered
Testy: Irritable

190. Juxtapose, Place

Juxtapose: Put side by side
Place: Put somewhere

191. Keen, Sharp

Keen: Highly developed
Sharp: Quick

192. Languid, Weak

Languid: Lacking energy
Weak: Not strong