lurking (?.)
- abeyant
- about to be
- already in sight
- approaching
- at hand
- between the lines
- brewing
- close
- close at hand
- coming
- covert
- cryptic
- delitescent
- doggo
- dormant
- esoteric
- forthcoming
- furtive
- future
- gathering
- going to happen
- hibernating
- hidden
- hidden out
- immediate
- imminent
- impendent
- impending
- in ambush
- in danger imminent
- in hiding
- in prospect
- in reserve
- in store
- in the cards
- in the offing
- in the wind
- in the wings
- in view
- instant
- latent
- looming
- lowering
- menacing
- muffled
- mystic
- near
- near at hand
- nearing
- obfuscated
- obscured
- occult
- on the horizon
- on tiptoe
- overhanging
- possible
- potential
- preparing
- prowling
- pussyfoot
- pussyfooted
- quiescent
- skulking
- sleeping
- sneaking
- stealing
- stealthy
- submerged
- surreptitious
- that will be
- threatening
- to come
- under cover
- under the surface
- underlying
- unmanifested
- upcoming
- veiled
- virtual
- waiting
- waiting concealed