The antonyms for "putting before" are "delaying," "postponing," "deferring," and "procrastinating." When we delay or postpone something, we choose to do it later, rather than putting it before other tasks. Deferring means to put something off until a later time or date, while procrastinating means to put off doing something altogether. The opposite of putting something before can also be to "prioritize," which means to give it more importance than other things. Sometimes, we may even choose to "ignore" or "neglect" something altogether, rather than putting it before other tasks.