Nafnorð “reason”
 eintala reason, fleirtala reasons eða óteljanlegt
- ástæðaSkráðu þig til að sjá þýðingar á dæmasetningum og einmála skilgreiningar á hverju orði. 
 The reason she was late to school was because her car broke down. 
- rökHe had a reason to be angry after they broke his trust. 
- skynsemiThrough education, we nurture our reason, enabling us to solve complex problems and make informed decisions. 
sögn “reason”
 nafnháttur reason; hann reasons; þátíð reasoned; lh. þt. reasoned; nhm. reasoning
- draga ályktunAfter examining all the evidence, the detective reasoned that the suspect could not have committed the crime. 
- hugsa og skilja með rökhyggjuHumans are distinguished from most animals by their ability to reason. 
- sannfæra (með röksemdafærslu eða rökræðu)She reasoned him into accepting the job offer by outlining all the benefits.