| gullible(adjective, innocent, susceptible, naive, nonresistant) |
| credulous(adjective, foolish, innocent, susceptible, naive) |
| trusting(adjective, foolish, innocent, susceptible, naive) |
| unsuspecting(adjective, foolish, innocent, susceptible, naive) |
| unsuspicious(nonresistant, gullible) |
| being a sucker(expression, adjective, idiom, foolish, innocent) |
| believing(adjective, foolish, innocent, susceptible, naive) |
| biting(adjective, foolish, innocent, susceptible, naive) |
| doting |
| easy mark(expression, adjective, foolish, innocent, susceptible) |
| falling hook line and sinker(expression, adjective, idiom, foolish, innocent) |
| fond |
| foolish(adjective, innocent, susceptible, naive, trusting) |
| green(adjective, foolish, innocent, susceptible, naive) |
| infatuated |
| innocent(adjective, foolish, susceptible, naive, trusting) |
| kidding oneself(expression, adjective, foolish, innocent, susceptible) |
| mark(adjective, foolish, innocent, susceptible, naive) |
| naive(adjective, foolish, innocent, susceptible, gullible) |
| silly(adjective, foolish, innocent, susceptible, naive) |