Adjektiv
numerous [ more numerous ; most numerous]
Verb
to abound [ abounded ; abounded ]
to multiply [ multiplied ; multiplied ]
to proliferate {Bio.}
كَثُرَ {بيولوجيا}
to rise {Med}
to mount {Med}
to bilge {Med}
to swell {Med}
Substantiv
...
multiply {math.}
كَثَّرَ {رياضيات}