Rife is an adjective. It has no singular or plural form
Rife is an adjective which means "common or frequent occurrence; prevalent; abundant, plentiful, or numerous, abounding (this word rife usually followed by with). Our slums and ghettos are rife with gang activities and crimes. The Mexican roads are known to be rife with bandits. The US high schools are rife with dropouts, kids who cannot read or pass tests and graduates who have no better an education than an 8th grader. The Federal Government is looking for solutions to the problem. They are upset that home school children can pass first year college courses.
The plural of 'this' is 'these' and the plural of 'that' is 'those'.
The plural form of can is cans.
The plural for the noun loss is losses; the plural possessive is losses'.
The plural is a normal S plural, associates.
I am rife with answers.
"Rife" is an adjective, not a noun. It means widespread or abounding, such as "The game was rife with errors."
Royal Raymond Rife developed his technology in the 1920's
Rife = Abundant, filled with It was so dark and clear that the sky was rife with stars.
Royal Rife was born in 1888.
Royal Rife died in 1971.
Cold-rife is a mis-spelling of Scots CAULD-RIFE, meaning susceptible to cold; French: frileux.
Josh Rife was born on 1979-12-29.
John Winebrenner Rife died in 1908.
John Winebrenner Rife was born in 1846.
Lucas Rife is 5' 5 1/2".
you can use it in the sentence using the example below "The sentence was rife with mistakes."