| turned on(expression, adjective, cool, familiar, desirous) |
| unanimous(adjective, joint, linked, combined, homogeneous) |
| understanding(adjective, smart, familiar, intelligent, brilliant) |
| undivided(adjective, joint, linked, combined, homogeneous) |
| unified(adjective, joint, linked, combined, homogeneous) |
| unitary(adjective, united, linked, homogeneous, cooperative) |
| up(adjective, familiar, knowledgeable, skilled, aware) |
| up-to-date(adjective, familiar, knowledgeable, skilled, experienced) |
| versant(adjective, familiar, knowledgeable, skilled, witting) |
| versed(adjective, cool, sensible, familiar, knowledgeable) |
| versed in(expression, adjective, familiar, knowledgeable, witting) |
| vigilant(adjective, careful, cautious, aware, attentive) |
| wary(adjective, careful, cautious, aware, attentive) |
| watchful(adjective, careful, cautious, aware, attentive) |
| well-informed(adjective, familiar, knowledgeable, skilled, informed) |
| well-rounded(adjective, smart, familiar, intelligent, brilliant) |
| well up in(expression, adjective, idiom, familiar, knowledgeable) |
| wise(adjective, alert, familiar, knowledgeable, responsive) |
| with-it(adjective, smart, familiar, intelligent, brilliant) |
| with eyes peeled(expression, adjective, idiom, careful, aware) |