abreast of

aware cognizant current enlightened hip informed knowledgeable up on up to speed up-to-date up-to-the-minute well-informed

a step from adjacent to adjoining alongside aside at one's elbow at the edge of at the side of bordering on by cheek by jowl close at hand close to close upon connected with contiguous to fornent in juxtaposition near nearby neck and neck neighboring next door to nigh opposite overlooking round side by side verging on with