olemus
Wiktionary:
1. the action of expressing thoughts, ideas, feelings, etc
2. a particular way of phrasing an idea
3. a colloquialism or idiom.
4. facial appearance usually associated with an emotion

näiteid
ambiguous expression --
-- 1. mitmetähenduslik näoilme 2. kahemõtteline väljendus
beyond expression -- väljendamatu
bookish expression -- raamatulik väljend
expressionless -- ilmetu
expression of honour -- auavaldus
expression of no confidence -- umbusalduse avaldamine
expression of opinion -- seisukoha väljendamine
expression of thanks -- tänu avaldamine
expression of will -- tahteavaldus
facial expression -- miimika; näoilme; grimass
give expression to -- väljendama
hackneyed expression -- kulunud väljend
idiomatic expression -- idioom; fraseologism; väljendverb
mercantile expression -- äritermin
mode of expression -- väljenduslaad
peculiar expression -- 1. veider ilme 2. kummaline väljend
power of expression -- väljendusrikkus
query expression -- päringulause
radical expression -- jõuline väljendus
self-expression -- eneseväljendus
vulgar expression -- labane väljend

lingvistikas
https://web.uri.edu/iaics/files/07-Joanna-Radwanska-Williams.pdf

http://www.finedictionary.com/verbal%20expression.html

https://www.gabormelli.com/RKB/Linguistic_Expression

https://direct.mit.edu/tacl/article/doi/10.1162/tacl_a_00442/108933/Idiomatic-Expression-Identification-using-Semantic

https://rm.coe.int/tool-33-a-list-of-expressions-for-everyday-communication-language-supp/16807171b7

näoilme
https://en.wikipedia.org/wiki/Facial_expression

https://www.frontiersin.org/articles/10.3389/fpsyg.2013.00115/full

vt ka
- avaldis