-ar
(Latin: a suffix; pertaining to, of the nature of, like; denoting an agent)
popular
1. Regarded with favor, approval, or affection by people in general.
2. Treated with favor, approval, or affection by an acquaintance or acquaintances: "He's my most popular friend."
3. Representing the people; especially, the common people: "There is popular agreement against going war."
4. Of the people as a whole; especially, of all citizens of a nation or state qualified to participate in an election: popular suffrage; the popular vote; popular representation.
5. Prevailing among the people generally: "There is a popular trend for laptop computers."
6. Suited to or intended for the general masses of people.
7. Adapted to ordinary intelligence or taste; such as, popular articles on science.
8. Suited to the means of ordinary people; not expensive: "Popular prices on all tickets to the movie were offered."
regular
secular
1. Worldly rather than spiritual.
2. Not specifically relating to religion or to a religious body: "They were playing secular music instead of sacred hymns."
3. Relating to or advocating secularism.
4. Not bound by monastic restrictions; especially, not belonging to a religious order (a reference to the clergy).
5. Occurring or observed once in an age or century.
6. Lasting from century to century.
7. Etymology: it was used in early Christian texts for the "temporal world"; as opposed to the "spiritual world"; and that was the sense in which its derived adjective Latin
saecularis passed via Old French
seculer into English.
The more familiar modern English "non-religious" meaning came into the language at about the 16th century.
similar
singular
solar
1. Relating to or derived from the sun or utilizing the energies of the sun.
2. Referring to, or proceeding from the sun; such as, "solar rays" and "solar physics".
3. Using or operated by energy derived from the sun; including "a solar heating system".
4. Determined or measured in reference to the sun, as the "solar year".
5. Describing any renewable form of energy that does not create greenhouse gas emissions or nondegradable toxic wastes.
spectacular
stellar
titular
tubercular
tubular
vascular
1. Characterized by, or containing vessels that carry or circulate fluids; such as, blood, lymph, or sap, through the body of an animal or plant.
2. Relating to, constituting, or affecting a tube or a system of tubes for the conveyance of a body fluid (as blood or lymph); such as, vascular disease or vascular surgical techniques.
3. Supplied with or containing ducts and especially blood vessels; such as, a vascular tumor or the vascular layer of the skin.
vernacular
vulgar