Complex and Must

Complex

Complex noun - A structure that is designed and built for a particular purpose.

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Must and complex are semantically related. In some cases you can use "Must" instead a noun "Complex".

Must noun - Something necessary, indispensable, or unavoidable.

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Complex and must are semantically related. Sometimes you can use "Complex" instead a noun "Must".

nice	nice complex	nice must
real	real complex	real must
big	big complex	big must
bad	bad complex	bad must
Other adjectives: main, ancient, military, titular.

Instead of saying "I must be crazy" or "I must be hallucinating", he says "I must be having a complex partial seizure...".

Source: Busman's Vocabulary
The more complex the spell, the more research and calculations you must make before trying to cast a spell, and the most complex require entire rituals and years of planning.

Source: Functional Magic aka: Magic
That phrase, and 'bench packed with complex electronic equipment' appeared so often that he must have been taking them off the scripts.

Source: Author Catchphrase

Cite this Source

Must and Complex. (2016). Retrieved 2026, August 03, from https://thesaurus.plus/related/complex/must

Complex & Must. N.p., 2016. Web. 03 Aug. 2026. <https://thesaurus.plus/related/complex/must>.

Must or Complex. 2016. Accessed August 03, 2026. https://thesaurus.plus/related/complex/must.

Google Ngram Viewer shows how "complex" and "must" have occurred on timeline