While "strike pose" implies a deliberate, often dramatic posture or stance, its antonyms suggest a more natural, relaxed position. Some alternatives might include "slouch," "sink into oneself," or "melt into the background." Other options might reflect specific attitudes or behaviors, such as "shrug off," "ignore," or "blend in." Still others could suggest a more formal or traditional style of presentation, such as "stand at attention," "assume a regal posture," or "hold oneself erect." Ultimately, the antonym of "strike pose" might depend on context, audience, or personal preference, but it is likely to involve a sense of ease or unselfconsciousness.