Many writers, including myself, have found themselves using "say" or "said" almost (if not) constantly when tagging dialogue wanting to use other words. Now, I don't think using "say" or "said" frequently is a bad thing, but using it too much may make your story a little less interesting. So, after doing some thinking and research, I've come up with a list of synonyms you can use instead of "say" or "said."

**Note: these words are written in past tense. You can look up other tenses on the internet**

1. Abnegate

2. Add

3. Admit

4. Advise

5. Agree

6. Announce

7. Answer

8. Apologise

9. Argue

10. Ask

11. Assent

12. Assert

13. Assure

14. Babble

15. Bark

16. Bawl

17. Beg

18. Begin

19. Bite

20. Blabber

21. Blast

22. Blather

23. Bleat

24. Blurt

25. Bluster

26. Boast

27. Brag

28. Breathe

29. Burble

30. Cackle

31. Call

32. Caterwaul

33. Chat

34. Challenge

35. Chant

36. Chirp

37. Chirrup

38. Chuckle

39. Claim

40. Coax

41. Command

42. Communicate

43. Complain

44. Conclude

45. Confess

46. Confirm

47. Continue

48. Counter

49. Countermand

50. Convey

51. Cry

52. Curse

53. Cuss

54. Decide

55. Declare

56. Deliver

57. Demand

58. Deny

59. Disagree

60. Disclose

61. Drawl

62. Drone

63. Egg-on

64. Encourage

65. Exclaim

66. Express

67. Finish

68. Flirt

69. Fret

70. Gasp

71. Giggle

72. Gloat

73. Gripe

74. Groan

75. Growl

76. Grumble

77. Grunt

78. Harp

79. Harp on

80. Hint

81. Hiss

82. Holler

83. Hound

84. Howl

85. Huff

86. Hum

87. Implore

88. Imply

89. Inform

90. Inquire

91. Insinuate

92. Insist

93. Interrupt

94. Jabber

95. Joke

96. Lament

97. Laugh

98. Lecture

99. Lie

100. Maintain

101. Maunder

102. Mention

103. Mew

104. Moan

105. Mumble

106. Mutter

107. Murmur

108. Nag

109. Natter on

110. Negate

111. Object

112. Offer

113. Order

114. Persist

115. Pester

116. Plea

117. Plead

118. Prate

119. Prattle

120. Pray

121. Proclaim

122. Promise

123. Pronounce

124. Propose

125. Protest

126. Query

127. Question

128. Ramble

129. Rasp

130. Rattle on

131. Read

132. Recall

133. Relate

134. Remark

135. Remember

136. Reminisce

137. Repeat

138. Report

139. Reply

140. Respond

141. Retort

142. Reveal

143. Riposte

144. Roar

145. Roast

146. Rumble

147. Scold

148. Scream

149. Screech

150. Shout

151. Shriek

152. Sigh

153. Sing

154. Slur

155. Snap

156. Snarl

157. Sneer

158. Sob

159. Speak

160. Splutter

161. Squeak

162. Squeal

163. Stammer

164. Start

165. State

166. Stutter

167. Suggest

168. Swear

169. Tattle

170. Tease

171. Tell

172. Tempt

173. Threaten

174. Twitter

175. Ululate

176. Urge

177. Utter

178. Voice

179. Wail

180. Warble

181. Warn

182. Weep

183. Wheedle

184. Wheeze

185. Whimper

186. Whine

187. Whisper

188. Wish

189. Woo

190. Yap

191. Yawn

192. Yell

193. Yowl

There you go!