haltingly

As an adjective halting

is prone to pauses or breaks; hesitant; broken.

As a verb halting

is .

As an adverb haltingly is

in a halting or limping manner; full of pauses or hesitation.

As an adverb haltingly

is in a halting or limping manner; full of pauses or hesitation.

As a noun lisp is

the habit or an act of lisping.

As a verb lisp is

to pronounce the sibilant letter ‘s’ imperfectly; to give ‘s’ and ‘z’ the sounds of ‘th’ ({{IPA|/θ /ð/|lang=en}}) — a defect common amongst children.

As a proper noun Lisp is

a functional programming language with a distinctive parenthesized syntax, much used in artificial intelligence.

As adverbs the difference between haltingly and stumblingly

is that haltingly is in a halting or limping manner; full of pauses or hesitation while stumblingly is in a stumbling way; unsteadily, haltingly.