(UNDER-1 9.)
1601. B. Jonson, Poetaster, IV. i. Carrie not too much vnderthought betwixt your selfe and them.
1886. Athenæum, 6 Feb., 192. Without any disturbing underthought.
1898. Weyman, Castle Inn, i. Until he had put it beyond question that she had no underthought.