1. Unseen.

2. A current below the surface of water; an unseen influence.

Nuttall's Standard dictionary of the English language By Nuttall, P.Austin

• udercurrent,
• yndercurrent,
• hndercurrent,
• jndercurrent,
• indercurrent,
• 8ndercurrent,
• 7ndercurrent,
• ubdercurrent,
• umdercurrent,
• ujdercurrent,
• undercurrrent,
• undecurrent,
• undercurent,
• undercurret,
• undercurren,
• undercurrnet,
• undercurrentt,
• undercurrunt,
• undercurrant,
• undercurrens

• underdone,
• under control,
• underneath,
• underpayment,
• undertaker,
• undershoot,
• underbelly,
• underexpose,
• undercarriage,
• undermine,
• under that,
• underspent,
• undershirt,
• underrating,
• underspend,
• understand,
• underestimation,
• underlayment,
• underseal,
• undertake,
• undercoat,
• underpants,
• undersealed,
• underwrite,
• undergarment,
• undertaking,
• undersell,
• understock,
• underactive,
• undernourish,
• under fire,
• underquote,
• underwriter,
• underrate,
• undersize,
• undersign,
• understate,
• understated,
• underseller,
• undercharge,
• undersexed,
• underbred,
• undervalue,
• undershot,
• underdevelop,
• undertide,
• underline,
• undertone,
• underdress,
• undercoated,
• under our noses,
• understood,
• underdown,
• underwear,
• underwater,
• undergrowth,
• underside,
• undermentioned,
• underweight,
• underprice,
• underdressed,
• undersecretary,
• underframe,
• underscore,
• underskirt,
• underestimate,
• undercover,
• underfelt,
• underfoot,
• underpart.

The adjective form of the word "undercurrent" is "undercurrents"

The plural of the "undercurrent" can be the "undercurrents".

The singular of the "undercurrent" can be the "undercurrent".