Synonyms/Hypernyms (Ordered by Estimated Frequency) of noun groan

1 sense of groan

Sense 1
groan, moan -- (an utterance expressing pain or disapproval)
       => utterance, vocalization -- (the use of uttered sounds for auditory communication)

Synonyms/Hypernyms (Ordered by Estimated Frequency) of verb groan

1 sense of groan

Sense 1
groan, moan -- (indicate pain, discomfort, or displeasure; "The students groaned when the professor got out the exam booklets"; "The ancient door soughed when opened")
       => utter, emit, let out, let loose -- (express audibly; utter sounds (not necessarily words); "She let out a big heavy sigh"; "He uttered strange sounds that nobody could understand")