The crossword solutions for the term ENDING FOR PERCENT OR INFANT are 'ILE' (3 letters). The word 'ile' is a suffix that can be used to form words related to either percent or infant. It is derived from the Latin word 'ilis', meaning 'of or belonging to'. In terms of percent, it is often used to form words such as 'percentile' and 'PERCENTAGE'. In terms of infant, it is often used to form words such as 'INFANTILE' and 'INFANCY'.