This word is acceptable for play in the US & UK dictionaries that are being used in the following games:

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v. To enclose or encase completely with or as if with a covering: "Accompanying the darkness, a stillness envelops the city” ( Curtis Wilkie).

v. To attack (an enemy's flank).

v. To surround or enclose.

v. To put a covering about; to wrap up or in; to inclose within a case, wrapper, integument or the like; to surround entirely

To cover, as by wrapping or folding; inwrap; invest with or as with a covering; surround entirely; cover on all sides.

To form a covering about; lie around and conceal.

To line; cover on the inside.

Synonyms To encircle, encompass, infold, wrap up.

n. A wrapper; an inclosing cover; an integument: as, the envelop of a seed. Specifically

n. A prepared wrapper for a letter or other paper, so made that it can be sealed.

n. In fortification, a work of earth in form of a parapet, or of a small rampart with a parapet, raised to cover some weak part of the works.

n. In astronomy, a shell partly surrounding the nucleus of a comet on the side next the sun and away from the tail, and appearing like a semicircular arch.

n. In geometry, a curve or surface touching a continuous series of curves or surfaces.

v. enclose or enfold completely with or as if with a covering

"Accumulate all the possible circumstances which shall reinforce the right motives; put yourself assiduously in conditions that encourage the new way; make engagements incompatible with the old; take a public pledge, if the case allows; in short, envelop your resolution with every aid you know."

enveloped    envelopes    enveloping    envelops   

cover   

enveloping cone    stamped envelop    floral envelop    envelope   

capsulate    tube    capsule    enshroud    engulf    benight    shroud    bathe    capsulise    cover   

enveloped    enveloping   

develop    redevelop    underdevelop   

bourn    incontinency    revenant