frequent

Etymology 1

From Old French frequent, from Latin frequens (“crowded, crammed, frequent, repeated, etc.”), from Proto-Indo-European *bhrek- (“to cram together”).

adj

1. Done or occurring often; common.
   I take frequent breaks so I don't get too tired.
   There are frequent trains to the beach available.
   I am a frequent visitor to that city.
   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
2. Occurring at short intervals.
3. Addicted to any course of conduct; inclined to indulge in any practice; habitual; persistent.
4. (obsolete) Full; crowded; thronged.
   'Tis Caesar's will to have a frequent senate.
5. (obsolete) Often or commonly reported.
   'Tis frequent in the city he hath subdued / The Catti and the Daci. 1626, Philip Massinger, The Roman Actor

Etymology 2

From Old French frequenter, from Latin frequentare (“to fill, crowd, visit often, do or use often, etc.”), from frequens (“frequent, crowded”).

verb

1. (transitive) To visit often.
   I used to frequent that restaurant.