270 entries under idiom topic. ×

8
pay attention to(verb, expression, phrasal verb, see)
7
catch sight of(verb, expression, phrasal verb, see)
7
keep an eye on(verb, expression, phrasal verb, support)
7
take notice(verb, expression, state, get)
6
take note(verb, expression, state, get)
6
take notice of(noun, expression, keep, see)
5
be guided by(verb, expression, support, keep)
5
live up to(verb, expression, support, keep)
4
fall in with(verb, expression, phrasal verb, meet)
4
give heed to(verb, expression, phrasal verb, get)
4
toe the line(verb, expression, accept, keep)
3
act up to(verb, expression, phrasal verb, observance)
3
be attentive(verb, expression, get, accept)
3
bear in mind(expression, note, regard, follow)
3
get a load of(verb, expression, phrasal verb, get)
3
get wise to(expression, determine, see, catch)
3
keep in view(verb, expression, cover, keep)
3
keep under surveillance(verb, expression, cover, keep)
3
lay eyes on(verb, expression, consider, see)
3
lend an ear(verb, expression, get, accept)
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APASmart Define. (2016). observe thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/observe/thesaurus/synonyms
ChicagoSmart Define. 2016. "observe thesaurus" https://smartdefine.org/observe/thesaurus/synonyms (accessed September 26, 2026).
HarvardSmart Define 2016, observe thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/observe/thesaurus/synonyms>.
MLASmart Define. "observe thesaurus" 11 February 2016. Web. 26 September 2026. <https://smartdefine.org/observe/thesaurus/synonyms>