heat

[1]	warm (up)
[2]	heat up , excite , intensify , impassion , inflame , kindle , ignite , quicken , inspirit , rouse , awaken/waken , stir , animate , stimulate , warm (up) , activate , (Colloq) (Brit) hot up
[3]	heat up
[4]	inflame , stir up , wake , ignite , fire up
[5]	hot up , heat up

[1]	heat energy , warmth , warmness , hotness , fever , fieriness , torridity/torridness
[2]	passion , hotness , ardour , high temperature , fervour , fervidness , intensity , fury , zeal , zealousness , earnestness , vehemence , eagerness , enthusiasm , excitement , tenseness , tension , stress , agitation , arousal , impetuosity , stimulation , exhilaration
[3]	warmth
[4]	warmth , passion
[5]	estrus , oestrus , rut
[6]	heating system , heating plant , heating