Definition of "frequent"

During the late 1950s and throughout the 1960s, this commitment brought him into frequent critical confrontation with entrenched forms of conservative thinking [...]

1999, Nicholas Walker, “The Reorientation of Critical Theory: Habermas”, in Simon Glemdinning, editor, The Edinburgh Encyclopedia of Continental Philosophy‎, Routledge, page 489

Above, the frequent feudal towers / Through green leaves lift their walls of grey, [...]

1816, Lord Byron, “Canto III”, in Childe Harold’s Pilgrimage. Canto the Third, London: Printed for John Murray, […], stanza LV.2, page 31

[E]very Man thinks he has laid in a ſufficient Stock of Merit, and my pretend to any Employment, provided he has been loud and frequent in declaring himſelf hearty for the Government.

1709, [Jonathan Swift], A Project for the Advancement of Religion, and the Reformation of Manners. […], London: […] Benj[amin] Tooke, […], page 59

'Tis Caesar's will to have a frequent senate.

1603 (first performance; published 1605), Benjamin Jonson [i.e., Ben Jonson], “Seianus his Fall. A Tragœdie. […]”, in The Workes of Ben Jonson (First Folio), London: […] Will[iam] Stansby, published 1616

'Tis frequent in the city he hath subdued / The Catti and the Daci.

1626, Philip Massinger, The Roman Actor