5 entries under idiom topic. ×

9
keep ears open(expression, action, anxiety, alertness)
8
cock up ears(expression, action, anxiety, alertness)
8
prick up ears(expression, action, anxiety, alertness)
7
be on the alert(expression, action, anxiety, alertness)
7
pull up socks(expression, action, anxiety, alertness)
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APASmart Define. (2011). heave a sigh of relief thesaurus. Retrieved October 2, 2026, from https://smartdefine.org/heave_a_sigh_of_relief/thesaurus/antonyms
ChicagoSmart Define. 2011. "heave a sigh of relief thesaurus" https://smartdefine.org/heave_a_sigh_of_relief/thesaurus/antonyms (accessed October 2, 2026).
HarvardSmart Define 2011, heave a sigh of relief thesaurus, Smart Define, viewed 2 October, 2026, <https://smartdefine.org/heave_a_sigh_of_relief/thesaurus/antonyms>.
MLASmart Define. "heave a sigh of relief thesaurus" 20 May 2011. Web. 2 October 2026. <https://smartdefine.org/heave_a_sigh_of_relief/thesaurus/antonyms>