The phrase "strike head on" generally describes a physical collision or confrontation, but when searching for its antonyms, we can consider phrases that connote avoidance, retreat, or sidestepping. Words like evade, dodge, elude, circumvent, and avoid are apt antonyms that refer to the act of intentionally steering clear of potential conflict or harm. Similarly, expressions like swerve, veer off, or shift direction are antonyms that suggest changing course to avoid a head-on encounter. In a more abstract context, "strike head on" can also signify a direct approach to problem-solving, in which case antonyms like beat around the bush, procrastinate, or delay could be appropriate.