adj. sul·tri·er, sul·tri·est
a. Very humid and hot: sultry July weather.
b. Extremely hot; torrid: the sultry sands of the desert.
a. Expressing sexual desire: a sultry look.
b. Arousing sexual desire: a sultry dance.
[From obsolete sulter, to swelter, possibly alteration of SWELTER.]
The American Heritage® Dictionary of the English Language, Fifth Edition copyright ©2018 by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Indo-European & Semitic Roots Appendices
Thousands of entries in the dictionary include etymologies that trace their origins back to reconstructed proto-languages. You can obtain more information about these forms in our online appendices:
The Indo-European appendix covers nearly half of the Indo-European roots that have left their mark on English words. A more complete treatment of Indo-European roots and the English words derived from them is available in our Dictionary of Indo-European Roots.