(more heedless; most heedless) not paying careful attention They remain heedless of their own safety. the heedless use of natural resources heedless waste
1 a (+ object) : to think deeply or carefully about (something) I stopped to contemplate (=ponder) what might have happened. He contemplated the meaning of the poem for a long time. Life without them is too awful to contemplate. Read More …
1 a : (+ object) : to set (something) on fire : to cause (something) to burn : LIGHT ignite a bonfire The fire was ignited by sparks. b : (no object) : to begin burning : to catch fire Read More …