Ghafil means Reckless/ Negligent
Given below is a couplet which explains the meaning of the word:
Sair kar Duniya ki Ghafil zindagaani phir kahan?
Zindagi gar kuch rahi toh yeh jawani phir kahan?
Khawaja Meer Dard
Translation:
Travel the world oh reckless there is no certainty of life,
even if you do live a long enough there is no certainty of youth
urduwallahs 