English

Adjective

lostest

1. (nonstandard) superlative form of lost: most lost
   • 1906 September, The Sunday School Journal and Bible Student's Magazine, volume 38, number 9, page 675:

     The strongest sheep can be the "lostest" because of its power to go farthest into the wilderness.

   • 1920, Tardy, William Thomas, The man and the message, Mrs. W.T. Tardy, page 100:

     No man can safely be left alone, and the lostest man in all creation is he who says "No one cares for my soul."

   • 2009, Owen, James A., The Shadow Dragons, Simon and Schuster, page 269:

     And when you add to that the peculiar weather patterns, the temporal shifts, and mermaids who had a tendency to chew up any cables strung underwater, the result was the lostest of lost causes.

Verb

lostest

1. (archaic) second-person singular simple past form of lose

German

Verb

lostest

1. Second-person singular preterite of losen.
2. Second-person singular subjunctive II of losen.