It depends on whether you are referring to a person or a thing. A person who is old can also be called elderly. A better euphemism (a kind way to say something) is a "senior citizen." A thing that is old may also be called ancient: they discovered an ancient scroll that was about three thousand years old.
Thought to be old Dutch 'ezel'. There is an old German word 'esel' and a similar word in old English
similar
The word derives from an Old English word 'swimman' meaning to 'move in or on the water'. Similar words are known in the Old European languages
From a very Old English word 'understandan'. There are similar old Continental words, but the exact meaning is often unclear
From an Old English word 'baed' meaning to immerse in water. There are old German and Dutch words very similar to the old English, the word have moved around the continent with ancient travelers
The ð sound in a word is similar to the light "th" sound - therefore, the word Smið is pronounced the same as the popular name Smith.
Similar is an adjective.
The original word dig comes from diggen, which seems to come from the Old French diguer. It has similar roots to deolfan, which means to delve.
The upper, fortified part of an old city.
It relates to an Old English word 'growan' meaning to grow through the sense of the colour of living plants. Maybe from the old Dutch word 'groen' or other early continental words of similar spelling
There is an Old English word 'gast' meaning soul, spirit or life. This may be a derivation of a Germanic word 'ghoizdoz' or an Old Dutch word 'gheest' which make reference to a spirit. Other similar Old European words translate ghost as being something terrible and frightening
The similar sounding word for "are" is "our."