42) thermodynamic. The American Heritage® Dictionary of the English Language: Fourth Edition. 2000.
...1. Characteristic of or resulting from the conversion of heat into other forms of energy. 2. Of or relating to thermodynamics. thermo·dy·nami·cal·ly -ADVERB...

43) girlish. The American Heritage® Dictionary of the English Language: Fourth Edition. 2000.
...Characteristic of or befitting a girl: girlish charm. girlish·ly -ADVERBgirlish·ness -NOUN...

44) secondary sex characteristic. The American Heritage® Dictionary of the English Language: Fourth Edition. 2000.
...Any of various genetically transmitted physical or behavioral characteristics that appear in humans at puberty and in sexually mature animals and that differentiate...

45) boyish. The American Heritage® Dictionary of the English Language: Fourth Edition. 2000.
...Characteristic of or befitting a boy: boyish charm. boyish·ly -ADVERBboyish·ness -NOUN...

46) waggish. The American Heritage® Dictionary of the English Language: Fourth Edition. 2000.
...Characteristic of or resembling a wag; jocular or witty. waggish·ly -ADVERBwaggish·ness -NOUN...

47) slatternly. The American Heritage® Dictionary of the English Language: Fourth Edition. 2000.
...1. Characteristic of or befitting a slattern. 2. Slovenly; untidy. slattern·li·ness -NOUN...

48) brotherly. The American Heritage® Dictionary of the English Language: Fourth Edition. 2000.
...Characteristic of or befitting brothers; fraternal. brother·li·ness -NOUNbrother·ly -ADVERB...

49) ferromagnetic. The American Heritage® Dictionary of the English Language: Fourth Edition. 2000.
...Of or characteristic of substances such as iron, nickel, or cobalt and various alloys that exhibit extremely high magnetic permeability, a characteristic saturation...

50) communistic. The American Heritage® Dictionary of the English Language: Fourth Edition. 2000.
...Of, characteristic of, or inclined to communism. commu·nisti·cal·ly -ADVERB...