unsuitable

adj

1. Not suitable.

   “The great so-called seaport of T‘ien-ching (Tientsin), some 75 miles to the southeast, actually lies 40 miles from the sea on the Hai Ho, which is unsuitable for any but light navigation.”

   “It is intended to develop San Lourenzo^([sic]) into a deep-water port, as Guayaquil is highly unsuitable because of drifting silt banks and a thirty-mile river approach.”

   “Numerous excursions into the field proved to the author that stone axes were unsuitable for gathering shaftings of the proper diameter for arrows. Chopping resulted in long tapering ends […]”