Synonyms for the phrase "pick up on" can be helpful for communicating ideas more precisely. Some alternative terms for "pick up on" include "notice," "perceive," "discern," "identify," "recognize," "catch," and "spot." These synonyms can be useful in both formal and informal settings, such as in discussions, presentations, or written texts. For example, instead of saying "I picked up on the subtle cues," one could say "I perceived the subtle cues." Thus, by using synonyms for "pick up on," individuals can express their thoughts more accurately and with greater clarity.