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

• Lexulous
• Wordscraper
• Wordosaur

v. Present participle of plod.

adj. Progressing slowly and laboriously.

adj. Progressing in a slow, toilsome manner; characterized by laborious diligence

Moving or working with slow and patient diligence; patiently laborious: as, a man of plodding habits.

adj. (of movement) slow and laborious

n. hard monotonous routine work

n. the act of walking with a slow heavy gait

"And once you have those items, deriving the required engineering data to build a useful bomb is an exercise in plodding along (or, with more money, certain parties just might be willing to sell you that supposedly ultra-secret data)."

effortful   

labor    toil    labour    walking    walk   

ploddingness   

plod   

codding    godding    nodding    prodding    rodding