More hot and humid

• More oppressive, as summer weather goes
• Leaders of Soviet Union left Marx's birthplace with even more passion

Wiktionary Word definitions in Wiktionary
a. (en-comparative of: sultry )

WordNet Word definitions in WordNet
See sultry

The Collaborative International Dictionary Word definitions in The Collaborative International Dictionary
Sultry \Sul"try\ (s[u^]l"tr[y^]), a. [Compar. Sultrier (s[u^]l"tr[i^]*[~e]r); superl. Sultriest .] [From Sweltry .] Very hot, burning, and oppressive; as, Libya's sultry deserts. Such as, born beneath the burning sky And sultry sun, betwixt the tropics ...