Pertaining to or having the nature of fire; containing fire; resembling fire.
Resulting from, or produced by, great heat. With rocks, it could also mean formed from lava or magma.
Very emotional or passionate.
Extreme in size or strength.
Stressful and tiring.
Strained; tightly drawn.
Extreme in degree; excessive.
Very severe.
Strict, very close or earnest.